database/sql: document closing requirements for Stmts
database/sql: document closing requirements for Stmts

Fixes #8952.

Change-Id: I678f9706eccb5a344eeb0244f45b7b7669830bdc
Reviewed-on: https://go-review.googlesource.com/12204
Reviewed-by: Andrew Gerrand <395a7d33bec8475c9b83b7d440f141bcbd994aa5@golang.org>

mdp/go,vsekhar/elastic-go,jonahglover/go,mbrukman/go,nakedgc/go,Charlesdong/go-1,ImJasonH/go,yuhengye/go,nawawi/go,vanloswang/go,mwhudson/go,derekmarcotte/go,joshsammut/go,greyhwndz/go,gohin/go,arschles/golang-go,beealone/go,arschles/golang-go,miolini/go,momchil-velikov/go,Pulgafree/go,alex-zhang/go,CAFxX/go,josharian/go,Charlesdong/go-1,alash3al/go,sndnvaps/go,shines77/go,donnel6809/go,donnel6809/go,josharian/go,nakedgc/go,yangzhongj/go,4ad/go,josharian/go,rachtsingh/gogojuice,XuYunnan/go,dgnorton/go,mikekap/go,uileyar/go,zouchao2010/go,Cofyc/go,Endika/go,chinanjjohn2012/go,honsiorovskyi/go,CarterTsai/go,vanloswang/go,ericsnowcurrently/go,ericsnowcurrently/go,gohin/go,cainiaocome/go,NichoZhang/go,ganboing/go-esx,malvira/go,jameskumar/go,JioCloud/go,rentongzhang/go,roth1002/go,dkolbly/go,undergrowthlinear/go,Stan-Lin-/go,AALEKH/go,famorted/go,RBEGamer/go,rachtsingh/gogojuice,JioCloud/go,CodyGuo/go,undergrowthlinear/go,dafyddcrosby/go,binarycrusader/go,dpatel06/go,snowsnail/go,yuhengye/go,gdey/go,jameskumar/go,jdeng/go,fjballest/golang,Stan-Lin-/go,albertjin/golang-go,youprofit/go,jdeng/go,ErikDubbelboer/go,weisd/go,vsekhar/elastic-go,nawawi/go,cnbin/go,monetate/go,wangfakang/go-1,willjunspecial/go,NichoZhang/go,Young55555/go,royels/go,sosop/go,Endika/go,codestation/go,constantine001/go,danycoro/go,gdey/go,PoohSunny/go,NunoEdgarGub1/go,chinanjjohn2012/go,kim-racktop/go,odeke-em/go,yuhengye/go,undergrowthlinear/go,zouchao2010/go,Badredapple/go,yuhengye/go,arschles/go-1,mbrukman/go,XuYunnan/go,cainiaocome/go,samanalysis/go,myPublicGit/go,roth1002/go,kevinc0825/go,linux-on-ibm-z/go,sosop/go,josharian/go,miolini/go,cnbin/go,devpadawan/go,ObjectiveJoe/go,ichu501/go,arschles/golang-go,linux-on-ibm-z/go,mgyenik/go,qskycolor/go,golang/go,arschles/go-1,JioCloud/go,weisd/go,mdp/go,likesea/go,danycoro/go,qskycolor/go,springning/go,albertjin/golang-go,nawawi/go,jasonxiong/go,shines77/go,miolini/go,ericsnowcurrently/go,donnel6809/go,golang/go,derekmarcotte/go,monetate/go,ganboing/go-esx,dpatel06/go,vishsingh/go,xiaobodu/go,undergrowthlinear/go,cloudflare/go,theif519/go,andrewchambers/go,polyverse-security/go,ImJasonH/go,chinanjjohn2012/go,monetate/go,zhangg/go,cnbin/go,vanloswang/go,honsiorovskyi/go,vishsingh/go,odeke-em/go,mwhudson/go,yeyuguo/go,kim-racktop/go,honsiorovskyi/go,vsdutka/go,dterei/go,beealone/go,agaurav/go,chinanjjohn2012/go,myPublicGit/go,ganboing/go-esx,shishkander/go,donnel6809/go,xiaobodu/go,jonasi/go,rentongzhang/go,Stan-Lin-/go,zouchao2010/go,ichu501/go,NichoZhang/go,jacobxk/go,jmptrader/go,arschles/go-1,pgmreddy/go,sosop/go,sosop/go,famorted/go,jefby/go,danielsoro/go,springning/go,JioCloud/go,ImJasonH/go,jonathanmarvens/go,ichu501/go,golang/go,parkdy/go,shishkander/go,cyberroadie/go,b54898533/go,jacobhaven/go,ganboing/go-esx,Jordanzuo/go,jefby/go,XuYunnan/go,samanalysis/go,theass/go,springning/go,Young55555/go,b54898533/go,cyberroadie/go,Badredapple/go,akutz/go,slavau/go,skotti/go,honsiorovskyi/go,jacobxk/go,4ad/go,skatsuta/go,suncycheng/go,dpatel06/go,gdey/go,ObjectiveJoe/go,cyberroadie/go,jefby/go,agaurav/go,constantine001/go,theif519/go,mdp/go,jameskumar/go,suncycheng/go,g522342435/go,zcwfeng/go,4ad/go,ericsnowcurrently/go,snowsnail/go,constantine001/go,jdhenke/go,andrewchambers/go,samanalysis/go,b54898533/go,zouchao2010/go,agaurav/go,4ad/go,vanloswang/go,yuhengye/go,cookerzhu/go,9618211/go,binarycrusader/go,yasarkunduz/go,theass/go,royels/go,Pulgafree/go,NunoEdgarGub1/go,ichu501/go,dterei/go,dafyddcrosby/go,weisd/go,CiscoCloud/go,mwhudson/go,honsiorovskyi/go,CiscoCloud/go,xujianhai/go,zhangg/go,josharian/go,jacobxk/go,4ad/go,skatsuta/go,cainiaocome/go,jefby/go,kakuhiroshi/go,willjunspecial/go,dpatel06/go,jonahglover/go,ericsnowcurrently/go,jonasi/go,ifagnosticism/go,danielsoro/go,snowsnail/go,gohin/go,springning/go,alash3al/go,roth1002/go,andrewchambers/go,GeorgiCodes/go,willjunspecial/go,lihuanghai/go,baiyunping333/go,deft-code/go,AALEKH/go,mwhudson/go,theif519/go,cainiaocome/go,jonathanmarvens/go,odeke-em/go,greyhwndz/go,Young55555/go,Young55555/go,miolini/go,cyberroadie/go,JioCloud/go,springning/go,AALEKH/go,jacobsa/go,arschles/go-1,binarycrusader/go,yangzhongj/go,GeorgiCodes/go,shazow/go,NichoZhang/go,alash3al/go,xinhuang327/go,dpatel06/go,dkolbly/go,deft-code/go,samanalysis/go,CodyGuo/go,CiscoCloud/go,famorted/go,kakuhiroshi/go,jacobsa/go,yangzhongj/go,devpadawan/go,zouchao2010/go,odeke-em/go,dgnorton/go,Endika/go,jonathanmarvens/go,youprofit/go,sinuos/go,josharian/go,odeke-em/go,weisd/go,RBEGamer/go,arschles/go-1,Pulgafree/go,9618211/go,vsekhar/elastic-go,WIZARD-CXY/go,roth1002/go,albertjin/golang-go,Samurais/go,suncycheng/go,CodyGuo/go,mdp/go,momchil-velikov/go,jacobhaven/go,rentongzhang/go,parkdy/go,joshsammut/go,jdhenke/go,famorted/go,agaurav/go,zhangg/go,xujianhai/go,willjunspecial/go,kevinc0825/go,ericsnowcurrently/go,donnel6809/go,deft-code/go,stormltf/go,jonahglover/go,gohin/go,fjballest/golang,CAFxX/go,dkolbly/go,Endika/go,shazow/go,likesea/go,xiaobodu/go,rentongzhang/go,CAFxX/go,ifagnosticism/go,constantine001/go,miolini/go,albertjin/golang-go,kakuhiroshi/go,vanloswang/go,albertjin/golang-go,nakedgc/go,vsdutka/go,zouchao2010/go,ErikDubbelboer/go,PoohSunny/go,monetate/go,Samurais/go,nakedgc/go,Charlesdong/go-1,Cofyc/go,ganboing/go-esx,youprofit/go,cloudflare/go,wangfakang/go-1,jasonxiong/go,joshsammut/go,CAFxX/go,andrewchambers/go,leeric92/go,odeke-em/go,greyhwndz/go,derekmarcotte/go,mgyenik/go,RBEGamer/go,g522342435/go,fjballest/golang,lihuanghai/go,slavau/go,CiscoCloud/go,dkolbly/go,rentongzhang/go,WIZARD-CXY/go,linux-on-ibm-z/go,weisd/go,andrewchambers/go,devpadawan/go,uileyar/go,nawawi/go,cookerzhu/go,josharian/go,arschles/go-1,yangzhongj/go,PoohSunny/go,miolini/go,slavau/go,CAFxX/go,theass/go,ganboing/go-esx,uileyar/go,malvira/go,akutz/go,myPublicGit/go,monetate/go,yasarkunduz/go,chinanjjohn2012/go,kim-racktop/go,golang/go,polyverse-security/go,jacobhaven/go,roth1002/go,ObjectiveJoe/go,sndnvaps/go,RBEGamer/go,ImJasonH/go,undergrowthlinear/go,shines77/go,codestation/go,samanalysis/go,akutz/go,andrewchambers/go,alex-zhang/go,pgmreddy/go,theif519/go,jacobxk/go,jacobhaven/go,theass/go,kevinc0825/go,derekmarcotte/go,vsdutka/go,zouchao2010/go,vanloswang/go,9618211/go,mikekap/go,alash3al/go,xiuzhifu/go,mwhudson/go,vsekhar/elastic-go,ganboing/go-esx,dgnorton/go,Endika/go,andrewchambers/go,yasarkunduz/go,miolini/go,Pulgafree/go,parkdy/go,cainiaocome/go,g522342435/go,kevinc0825/go,b54898533/go,ObjectiveJoe/go,jonasi/go,cloudrain21/go,skotti/go,weisd/go,WIZARD-CXY/go,g522342435/go,Cofyc/go,NunoEdgarGub1/go,willjunspecial/go,jmptrader/go,XuYunnan/go,cainiaocome/go,XuYunnan/go,dterei/go,kim-racktop/go,agaurav/go,arschles/golang-go,sndnvaps/go,CodyGuo/go,AALEKH/go,arschles/golang-go,kevinc0825/go,skotti/go,jonathanmarvens/go,pgmreddy/go,fjballest/golang,springning/go,alex-zhang/go,shazow/go,xiaobodu/go,snowsnail/go,cyberroadie/go,nakedgc/go,zhangg/go,yasarkunduz/go,wangfakang/go-1,parkdy/go,greyhwndz/go,polyverse-security/go,roth1002/go,qskycolor/go,leeric92/go,roth1002/go,dgnorton/go,parkdy/go,likesea/go,xiuzhifu/go,alash3al/go,jonathanmarvens/go,GeorgiCodes/go,goodlang/good,roth1002/go,alex-zhang/go,jasonxiong/go,parkdy/go,jasonxiong/go,myPublicGit/go,jameskumar/go,cloudflare/go,akutz/go,malvira/go,baiyunping333/go,jmptrader/go,rachtsingh/gogojuice,skatsuta/go,yeyuguo/go,likesea/go,binarycrusader/go,mwhudson/go,CarterTsai/go,jacobxk/go,joshsammut/go,zcwfeng/go,zcwfeng/go,deft-code/go,Charlesdong/go-1,derekmarcotte/go,AALEKH/go,jmptrader/go,vanloswang/go,xinhuang327/go,jacobsa/go,ImJasonH/go,RBEGamer/go,zhangg/go,alash3al/go,donnel6809/go,jdhenke/go,arschles/golang-go,youprofit/go,deft-code/go,pgmreddy/go,parkdy/go,danycoro/go,mbrukman/go,nawawi/go,jonathanmarvens/go,cloudrain21/go,jdhenke/go,Cofyc/go,kakuhiroshi/go,golang/go,sinuos/go,devpadawan/go,stormltf/go,Samurais/go,jdhenke/go,jonahglover/go,shazow/go,ifagnosticism/go,XuYunnan/go,skotti/go,monetate/go,ErikDubbelboer/go,odeke-em/go,leeric92/go,mbrukman/go,GeorgiCodes/go,stormltf/go,ichu501/go,royels/go,yangzhongj/go,xiuzhifu/go,kakuhiroshi/go,baiyunping333/go,kevinc0825/go,xinhuang327/go,b54898533/go,sosop/go,yangzhongj/go,agaurav/go,gohin/go,rentongzhang/go,mikekap/go,goodlang/good,jacobxk/go,dterei/go,royels/go,9618211/go,skatsuta/go,shazow/go,albertjin/golang-go,Stan-Lin-/go,ImJasonH/go,9618211/go,cookerzhu/go,ErikDubbelboer/go,skotti/go,JioCloud/go,shazow/go,CarterTsai/go,Samurais/go,fjballest/golang,momchil-velikov/go,jacobsa/go,lihuanghai/go,royels/go,donnel6809/go,joshsammut/go,jonasi/go,xinhuang327/go,jasonxiong/go,ifagnosticism/go,xinhuang327/go,rentongzhang/go,polyverse-security/go,willjunspecial/go,vanloswang/go,linux-on-ibm-z/go,slavau/go,cloudrain21/go,dterei/go,jasonxiong/go,Young55555/go,polyverse-security/go,Jordanzuo/go,Samurais/go,chinanjjohn2012/go,Jordanzuo/go,dafyddcrosby/go,danycoro/go,CarterTsai/go,momchil-velikov/go,rentongzhang/go,Young55555/go,jacobsa/go,jacobhaven/go,sndnvaps/go,Pulgafree/go,baiyunping333/go,willjunspecial/go,rachtsingh/gogojuice,cloudflare/go,Jordanzuo/go,springning/go,WIZARD-CXY/go,jacobxk/go,alash3al/go,mgyenik/go,uileyar/go,zcwfeng/go,zcwfeng/go,mdp/go,ObjectiveJoe/go,Pulgafree/go,danycoro/go,CarterTsai/go,g522342435/go,mikekap/go,jefby/go,joshsammut/go,g522342435/go,RBEGamer/go,likesea/go,stormltf/go,myPublicGit/go,qskycolor/go,myPublicGit/go,agaurav/go,baiyunping333/go,pgmreddy/go,leeric92/go,xiuzhifu/go,ErikDubbelboer/go,greyhwndz/go,slavau/go,nakedgc/go,devpadawan/go,snowsnail/go,g522342435/go,deft-code/go,youprofit/go,honsiorovskyi/go,GeorgiCodes/go,CarterTsai/go,shishkander/go,undergrowthlinear/go,wangfakang/go-1,Badredapple/go,shines77/go,kevinc0825/go,baiyunping333/go,codestation/go,qskycolor/go,binarycrusader/go,RBEGamer/go,weisd/go,skotti/go,xujianhai/go,skatsuta/go,gdey/go,Cofyc/go,lihuanghai/go,XuYunnan/go,PoohSunny/go,kim-racktop/go,Stan-Lin-/go,vishsingh/go,vsekhar/elastic-go,cnbin/go,danielsoro/go,chinanjjohn2012/go,NichoZhang/go,dkolbly/go,vsdutka/go,miolini/go,mgyenik/go,polyverse-security/go,dafyddcrosby/go,kim-racktop/go,samanalysis/go,jacobhaven/go,stormltf/go,christopher-henderson/Go,sndnvaps/go,sndnvaps/go,mbrukman/go,alex-zhang/go,rachtsingh/gogojuice,jmptrader/go,sosop/go,mgyenik/go,fjballest/golang,yeyuguo/go,CiscoCloud/go,Charlesdong/go-1,mbrukman/go,codestation/go,4ad/go,Charlesdong/go-1,lihuanghai/go,jonasi/go,yangzhongj/go,jdeng/go,NunoEdgarGub1/go,vsdutka/go,NichoZhang/go,shishkander/go,AALEKH/go,CiscoCloud/go,Pulgafree/go,ObjectiveJoe/go,Cofyc/go,PoohSunny/go,jameskumar/go,goodlang/good,xiuzhifu/go,devpadawan/go,CAFxX/go,mwhudson/go,Endika/go,vishsingh/go,xiuzhifu/go,beealone/go,momchil-velikov/go,ErikDubbelboer/go,golang/go,vishsingh/go,xinhuang327/go,NichoZhang/go,goodlang/good,jacobsa/go,agaurav/go,malvira/go,malvira/go,gohin/go,stormltf/go,gdey/go,cloudrain21/go,cainiaocome/go,jdeng/go,jonahglover/go,jdhenke/go,vsekhar/elastic-go,NunoEdgarGub1/go,dgnorton/go,nakedgc/go,dafyddcrosby/go,wangfakang/go-1,danielsoro/go,Stan-Lin-/go,WIZARD-CXY/go,theass/go,jdeng/go,jonahglover/go,b54898533/go,qskycolor/go,pgmreddy/go,dgnorton/go,sinuos/go,stormltf/go,skotti/go,ganboing/go-esx,g522342435/go,9618211/go,gohin/go,dgnorton/go,fjballest/golang,undergrowthlinear/go,ifagnosticism/go,cnbin/go,malvira/go,cookerzhu/go,myPublicGit/go,golang/go,kim-racktop/go,danycoro/go,skatsuta/go,dterei/go,likesea/go,samanalysis/go,codestation/go,arschles/go-1,danielsoro/go,yuhengye/go,dterei/go,likesea/go,XuYunnan/go,shishkander/go,4ad/go,CodyGuo/go,leeric92/go,yeyuguo/go,alex-zhang/go,skatsuta/go,jdeng/go,yeyuguo/go,jonasi/go,akutz/go,momchil-velikov/go,malvira/go,momchil-velikov/go,vsdutka/go,cloudrain21/go,shines77/go,Badredapple/go,theif519/go,Endika/go,mikekap/go,royels/go,dkolbly/go,jonathanmarvens/go,PoohSunny/go,9618211/go,devpadawan/go,rachtsingh/gogojuice,danielsoro/go,Badredapple/go,slavau/go,polyverse-security/go,Samurais/go,chinanjjohn2012/go,monetate/go,sinuos/go,Young55555/go,jacobhaven/go,mgyenik/go,likesea/go,JioCloud/go,AALEKH/go,ifagnosticism/go,Badredapple/go,CodyGuo/go,youprofit/go,zcwfeng/go,constantine001/go,xiaobodu/go,jonahglover/go,sinuos/go,suncycheng/go,arschles/go-1,codestation/go,nawawi/go,devpadawan/go,uileyar/go,shishkander/go,jasonxiong/go,yuhengye/go,cloudflare/go,goodlang/good,mgyenik/go,theif519/go,cyberroadie/go,mbrukman/go,sosop/go,zcwfeng/go,danycoro/go,jdhenke/go,cookerzhu/go,xujianhai/go,dafyddcrosby/go,royels/go,RBEGamer/go,cyberroadie/go,b54898533/go,theass/go,kakuhiroshi/go,zouchao2010/go,jonathanmarvens/go,cloudflare/go,jasonxiong/go,cloudrain21/go,linux-on-ibm-z/go,alex-zhang/go,vishsingh/go,ImJasonH/go,ErikDubbelboer/go,vishsingh/go,suncycheng/go,ObjectiveJoe/go,baiyunping333/go,theif519/go,pgmreddy/go,CarterTsai/go,youprofit/go,zhangg/go,mikekap/go,jefby/go,Jordanzuo/go,constantine001/go,jameskumar/go,CAFxX/go,codestation/go,cookerzhu/go,Charlesdong/go-1,mdp/go,albertjin/golang-go,goodlang/good,slavau/go,dpatel06/go,dafyddcrosby/go,snowsnail/go,binarycrusader/go,Samurais/go,ichu501/go,zcwfeng/go,Jordanzuo/go,greyhwndz/go,ericsnowcurrently/go,cloudrain21/go,JioCloud/go,Jordanzuo/go,kim-racktop/go,cookerzhu/go,cnbin/go,constantine001/go,leeric92/go,honsiorovskyi/go,cnbin/go,Jordanzuo/go,rachtsingh/gogojuice,CodyGuo/go,dgnorton/go,mikekap/go,uileyar/go,yasarkunduz/go,jefby/go,leeric92/go,slavau/go,arschles/golang-go,codestation/go,ifagnosticism/go,beealone/go,undergrowthlinear/go,sinuos/go,WIZARD-CXY/go,shazow/go,leeric92/go,jmptrader/go,jonasi/go,mwhudson/go,xiaobodu/go,binarycrusader/go,uileyar/go,b54898533/go,albertjin/golang-go,PoohSunny/go,xujianhai/go,cainiaocome/go,famorted/go,shines77/go,joshsammut/go,Samurais/go,CiscoCloud/go,yasarkunduz/go,vsdutka/go,Endika/go,suncycheng/go,WIZARD-CXY/go,jefby/go,ifagnosticism/go,sinuos/go,derekmarcotte/go,mdp/go,youprofit/go,xinhuang327/go,GeorgiCodes/go,NunoEdgarGub1/go,cnbin/go,Badredapple/go,famorted/go,goodlang/good,polyverse-security/go,momchil-velikov/go,nawawi/go,suncycheng/go,jacobhaven/go,wangfakang/go-1,jameskumar/go,nawawi/go,AALEKH/go,jdhenke/go,jacobxk/go,xujianhai/go,yuhengye/go,gdey/go,golang/go,derekmarcotte/go,constantine001/go,baiyunping333/go,CarterTsai/go,snowsnail/go,skotti/go,NichoZhang/go,gohin/go,ImJasonH/go,ichu501/go,yeyuguo/go,arschles/golang-go,zhangg/go,vsekhar/elastic-go,Badredapple/go,ichu501/go,CiscoCloud/go,nakedgc/go,beealone/go,weisd/go,danielsoro/go,greyhwndz/go,xinhuang327/go,deft-code/go,shishkander/go,ericsnowcurrently/go,Stan-Lin-/go,Cofyc/go,andrewchambers/go,qskycolor/go,yangzhongj/go,yasarkunduz/go,binarycrusader/go,springning/go,CAFxX/go,4ad/go,shines77/go,mbrukman/go,kakuhiroshi/go,lihuanghai/go,suncycheng/go,samanalysis/go,beealone/go,Stan-Lin-/go,xujianhai/go,kakuhiroshi/go,dterei/go,danycoro/go,Pulgafree/go,linux-on-ibm-z/go,dafyddcrosby/go,theass/go,vsdutka/go,josharian/go,theass/go,alash3al/go,malvira/go,yasarkunduz/go,jdeng/go,jacobsa/go,zhangg/go,shishkander/go,ObjectiveJoe/go,WIZARD-CXY/go,snowsnail/go,donnel6809/go,deft-code/go,dkolbly/go,PoohSunny/go,NunoEdgarGub1/go,jmptrader/go,akutz/go,9618211/go,derekmarcotte/go,GeorgiCodes/go,dpatel06/go,yeyuguo/go,odeke-em/go,xujianhai/go,famorted/go,CodyGuo/go,danielsoro/go,cloudflare/go,xiuzhifu/go,vishsingh/go,gdey/go,shines77/go,beealone/go,royels/go,sinuos/go,linux-on-ibm-z/go,dpatel06/go,dkolbly/go,akutz/go,linux-on-ibm-z/go,wangfakang/go-1,Charlesdong/go-1,jonasi/go,sosop/go,willjunspecial/go,jdeng/go,uileyar/go,sndnvaps/go,monetate/go,shazow/go,xiuzhifu/go,goodlang/good,Cofyc/go,myPublicGit/go,lihuanghai/go,cloudrain21/go,qskycolor/go,jacobsa/go,akutz/go,greyhwndz/go,vsekhar/elastic-go,ErikDubbelboer/go,mdp/go,sndnvaps/go,alex-zhang/go,stormltf/go,famorted/go,wangfakang/go-1,pgmreddy/go,cloudflare/go,skatsuta/go,joshsammut/go,gdey/go,cookerzhu/go,yeyuguo/go,jameskumar/go,mikekap/go,parkdy/go,honsiorovskyi/go,rachtsingh/gogojuice,jmptrader/go,lihuanghai/go,jonahglover/go,beealone/go,NunoEdgarGub1/go,fjballest/golang,kevinc0825/go,GeorgiCodes/go,Young55555/go,cyberroadie/go,theif519/go,mgyenik/go,xiaobodu/go,xiaobodu/go