fix wrong logic in event.go
fix wrong logic in event.go

hpcloud/etcd,chai2010/etcd,a-robinson/etcd,dnaeon/etcd,cockroachdb/etcd,CrazyJvm/etcd,njharman/etcd,ajityagaty/etcd,raoofm/etcd,sayden/etcd,gosharplite/etcd,westhood/etcd,YuleiXiao/etcd,improbable-io/etcd,giantswarm/etcd,tempbottle/etcd,sofuture/etcd,cchamplin/etcd,joshix/etcd,sebrandon1/etcd,robszumski/etcd,justintung/etcd,freeloop1114/etcd,hongchaodeng/etcd,QuantiumTechnology/etcd,siddontang/etcd,cognusion/etcd,gae123/etcd,insionng/etcd,raoofm/etcd,sofuture/etcd,Eagle-X/etcd,achanda/etcd,glycerine/etcd,barakmich/etcd,justintung/etcd,shafreeck/etcd,bdarnell/etcd,offscale/etcd,etcd-io/etcd,ktateish/etcd,armstrongli/etcd,swingbach/etcd,dannysauer/etcd,tamird/etcd,jmptrader/etcd,QuantiumTechnology/etcd,chai2010-playground/etcd,heyitsanthony/etcd,westhood/etcd,akauppi/etcd,onlyjob/etcd,cvik/etcd,insequent/etcd,plasticbox/etcd,princeqjzh/etcd,oscarrr110/etcd,purpleidea/etcd,freeloop1114/etcd,spotify/etcd,yichengq/etcd,SivagnanamCiena/etcd,vimalk78/etcd,ylong/etcd,jonboulle/etcd,Ulexus/etcd,xebitstudios/etcd,whuwxl/etcd,dalanlan/etcd,chipironcin/etcd,linuxcer/etcd,xiang90/etcd,glevand/coreos--etcd,lzbgt/etcd,gouyang/etcd,vimalk78/etcd,li-ang/etcd,visheshnp/etcd,mkumatag/etcd,mkumatag/etcd,sayden/etcd,es-chow/etcd,csuideal/etcd,hpcloud/etcd,combk8s/etcd,cchamplin/etcd,hongbinz/etcd,endocode/etcd,qqsun8819/etcd,xueshanf/etcd,a-robinson/etcd,msanterre/etcd,mwitkow-io/etcd,kingland/etcd,endocode/etcd,TheHippo/etcd,princeqjzh/etcd,Ulexus/etcd,yyljlyy/etcd,bluebreezecf/etcd,gityf/etcd,xdlinear/etcd,ravigadde/etcd,fasaxc/etcd,chai2010/etcd,gyuho/etcd,nkhare/etcd,chai2010-playground/etcd,kkaneda/etcd,openedbox/etcd,StorReduce/etcd,tamird/etcd,nieanan/etcd,youxidev/etcd,robszumski/etcd,shakefu/etcd,chipironcin/etcd,gityf/etcd,gtank/etcd,mqliang/etcd,sebrandon1/etcd,plasticbox/etcd,onlyjob/etcd,HideoYamauchi/etcd,spotify/etcd,njucslqq/etcd,asim/etcd,ecnahc515/etcd,dannysauer/etcd,bakins/etcd,yichengq/etcd,ktateish/etcd,junxu/etcd,jravetch/etcd,gosharplite/etcd,mickep76/etcd,giantswarm/etcd,rnaveiras/etcd,msanterre/etcd,spotify/etcd,purpleidea/etcd,mwitkow/etcd,kingland/etcd,spotify/etcd,snailwalker/etcd,StorReduce/etcd,es-chow/etcd,qqsun8819/etcd,rnaveiras/etcd,snailwalker/etcd,Yhgenomics/etcd,sebschrader/etcd,swingbach/etcd,delkyd/etcd,pigfoot/etcd,tguangch/etcd,lumjjb/etcd,yifan-gu/etcd,ajityagaty/etcd,axingblog/etcd,nieanan/etcd,olark/etcd,bspline/etcd,fasaxc/etcd,njharman/etcd,wfxiang08/etcd,mike-lerch/etcd,zaphod-concur/etcd,mgoelzer/etcd-fork2,insionng/etcd,mickep76/etcd,buaazp/etcd,asim/etcd,jeremyeder/etcd,coreos/etcd,mike-lerch/etcd,imzhulei/etcd,insequent/etcd,hzy001/etcd,nekto0n/etcd,honeyqa/etcd,pauldallen/etcd,bluebreezecf/etcd,hzy001/etcd,buaazp/etcd,glycerine/etcd,gtank/etcd,etcd-io/etcd,fasaxc/etcd,junxu/etcd,crandles/etcd,coreos/etcd,mkumatag/etcd,elimisteve/etcd,cvik/etcd,lumjjb/etcd,honeyqa/etcd,wantonsolutions/dinv-etcd,ecnahc515/etcd,Timer/etcd,joshix/etcd,gouyang/etcd,svdata/etcd,pengzj/etcd,ravigadde/etcd,mwitkow/etcd,fgbreel/etcd,tangkun75/etcd,combk8s/etcd,siddontang/etcd,xebitstudios/etcd,tempbottle/etcd,rnaveiras/etcd,arthurcolle/etcd,fanminshi/etcd,bdarnell/etcd,improbable-io/etcd,HideoYamauchi/etcd,xychu/etcd,sebschrader/etcd,betawaffle/etcd,openedbox/etcd,svdata/etcd,cockroachdb/etcd,pauldallen/etcd,zaphod-concur/etcd,hroyrh/etcd,Timer/etcd,bakins/etcd,nkhare/etcd,rchicoli/etcd,Eagle-X/etcd,mqliang/etcd,mitake/etcd,ajityagaty/etcd,OyTao/etcd_learning,mitake/etcd,Winslett/etcd,imzhulei/etcd,mgoelzer/etcd-fork2,luxas/etcd,mischief/etcd,spacejam/etcd,dnaeon/etcd,visheshnp/etcd,lorneli/etcd,gyuho/etcd,ylong/etcd,cognusion/etcd,wantonsolutions/dinv-etcd,jchauncey/etcd,jchauncey/etcd,devfreesg/etcd,kkaneda/etcd,devfreesg/etcd,shafreeck/etcd,xiang90/etcd,Ulexus/etcd,YuleiXiao/etcd,steveeJ/etcd,linuxcer/etcd,handsomesun/etcd,spacejam/etcd,whuwxl/etcd,wantonsolutions/dinv-etcd,polvi/etcd,akauppi/etcd,beni55/etcd,CrazyJvm/etcd,xychu/etcd,wowsoso/etcd,luxas/etcd,dterei/etcd,csuideal/etcd,mwitkow-io/etcd,jeremyeder/etcd,youxidev/etcd,hroyrh/etcd,shakefu/etcd,cvik/etcd,armstrongli/etcd,steveeJ/etcd,arthurcolle/etcd,barakmich/etcd,crandles/etcd,TheHippo/etcd,li-ang/etcd,iamqizhao/etcd,jlamillan/etcd,rchicoli/etcd,shawnps/etcd,mischief/etcd,jmptrader/etcd,yudai/etcd,offscale/etcd,jefby/etcd,glensc/etcd,achanda/etcd,mqliang/etcd,sinsharat/etcd,heyitsanthony/etcd,qiaochao911/etcd,chenbaihu/etcd,Winslett/etcd,lzbgt/etcd,beni55/etcd,nekto0n/etcd,axingblog/etcd,handsomesun/etcd,jonboulle/etcd,fanminshi/etcd,polvi/etcd,olark/etcd,jefby/etcd,qiaochao911/etcd,tguangch/etcd,lorneli/etcd,jravetch/etcd,yyljlyy/etcd,njucslqq/etcd,dalanlan/etcd,gae123/etcd,wfxiang08/etcd,betawaffle/etcd,iamqizhao/etcd,oscarrr110/etcd,OyTao/etcd_learning,elimisteve/etcd,chenbaihu/etcd,cvik/etcd,hongbinz/etcd,bspline/etcd,Ulexus/etcd,Yhgenomics/etcd,tangkun75/etcd,wowsoso/etcd,yudai/etcd,dterei/etcd,yifan-gu/etcd,fgbreel/etcd,xdlinear/etcd,pengzj/etcd,shawnps/etcd,sinsharat/etcd,SivagnanamCiena/etcd,glensc/etcd,hongchaodeng/etcd,delkyd/etcd,etcd-io/etcd,glevand/coreos--etcd,xueshanf/etcd,jlamillan/etcd