syscall: fix vet warning in UnixRights
syscall: fix vet warning in UnixRights

Change-Id: Ic19c94fe0af55e17f6c2fcfd36085ccb1584da6f
Reviewed-on: https://go-review.googlesource.com/15608
Reviewed-by: Ian Lance Taylor <87e9c6d529889242b7e184afb632328636553ab4@golang.org>
Run-TryBot: Ian Lance Taylor <87e9c6d529889242b7e184afb632328636553ab4@golang.org>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>

miolini/go,mwhudson/go,rachtsingh/gogojuice,Cofyc/go,kim-racktop/go,Cofyc/go,dterei/go,linux-on-ibm-z/go,goodlang/good,theif519/go,miolini/go,deft-code/go,binarycrusader/go,malvira/go,goodlang/good,vsekhar/elastic-go,nawawi/go,Jordanzuo/go,Cofyc/go,binarycrusader/go,malvira/go,binarycrusader/go,momchil-velikov/go,derekmarcotte/go,Jordanzuo/go,momchil-velikov/go,Endika/go,odeke-em/go,momchil-velikov/go,sndnvaps/go,josharian/go,4ad/go,Cofyc/go,codestation/go,binarycrusader/go,gdey/go,ImJasonH/go,christopher-henderson/Go,ganboing/go-esx,Cofyc/go,mwhudson/go,polyverse-security/go,momchil-velikov/go,Jordanzuo/go,Samurais/go,golang/go,odeke-em/go,roth1002/go,nawawi/go,theif519/go,ganboing/go-esx,Samurais/go,josharian/go,theif519/go,4ad/go,cloudflare/go,gdey/go,fjballest/golang,Cofyc/go,roth1002/go,Jordanzuo/go,miolini/go,cloudflare/go,sndnvaps/go,vanloswang/go,rachtsingh/gogojuice,miolini/go,Samurais/go,vanloswang/go,vanloswang/go,vsekhar/elastic-go,cyberroadie/go,fjballest/golang,jacobsa/go,roth1002/go,vanloswang/go,4ad/go,fjballest/golang,derekmarcotte/go,golang/go,cloudflare/go,dterei/go,Cofyc/go,linux-on-ibm-z/go,dterei/go,CAFxX/go,binarycrusader/go,sndnvaps/go,roth1002/go,jacobsa/go,mwhudson/go,codestation/go,vsekhar/elastic-go,odeke-em/go,akutz/go,CAFxX/go,deft-code/go,codestation/go,dterei/go,fjballest/golang,Endika/go,golang/go,ganboing/go-esx,linux-on-ibm-z/go,goodlang/good,akutz/go,mwhudson/go,theif519/go,4ad/go,polyverse-security/go,Jordanzuo/go,momchil-velikov/go,gdey/go,CAFxX/go,cloudflare/go,ganboing/go-esx,rachtsingh/gogojuice,theif519/go,josharian/go,momchil-velikov/go,suncycheng/go,akutz/go,polyverse-security/go,CAFxX/go,ganboing/go-esx,fjballest/golang,nawawi/go,akutz/go,linux-on-ibm-z/go,cyberroadie/go,nawawi/go,binarycrusader/go,suncycheng/go,ImJasonH/go,roth1002/go,Samurais/go,roth1002/go,derekmarcotte/go,vanloswang/go,vsekhar/elastic-go,linux-on-ibm-z/go,gdey/go,CAFxX/go,josharian/go,CAFxX/go,golang/go,cloudflare/go,derekmarcotte/go,ImJasonH/go,miolini/go,deft-code/go,derekmarcotte/go,Endika/go,Samurais/go,vsekhar/elastic-go,mwhudson/go,dterei/go,Endika/go,cloudflare/go,derekmarcotte/go,suncycheng/go,odeke-em/go,kim-racktop/go,rachtsingh/gogojuice,miolini/go,miolini/go,cyberroadie/go,ImJasonH/go,4ad/go,ganboing/go-esx,ImJasonH/go,nawawi/go,sndnvaps/go,dterei/go,sndnvaps/go,rachtsingh/gogojuice,theif519/go,vsekhar/elastic-go,goodlang/good,sndnvaps/go,cyberroadie/go,Jordanzuo/go,derekmarcotte/go,goodlang/good,ganboing/go-esx,akutz/go,suncycheng/go,deft-code/go,josharian/go,deft-code/go,linux-on-ibm-z/go,4ad/go,CAFxX/go,nawawi/go,akutz/go,kim-racktop/go,Jordanzuo/go,rachtsingh/gogojuice,kim-racktop/go,goodlang/good,roth1002/go,golang/go,codestation/go,binarycrusader/go,momchil-velikov/go,kim-racktop/go,ImJasonH/go,malvira/go,suncycheng/go,golang/go,gdey/go,Endika/go,codestation/go,vsekhar/elastic-go,gdey/go,jacobsa/go,linux-on-ibm-z/go,mwhudson/go,golang/go,CAFxX/go,gdey/go,nawawi/go,malvira/go,dterei/go,polyverse-security/go,josharian/go,goodlang/good,miolini/go,polyverse-security/go,akutz/go,cyberroadie/go,malvira/go,malvira/go,kim-racktop/go,fjballest/golang,mwhudson/go,4ad/go,akutz/go,odeke-em/go,4ad/go,Endika/go,theif519/go,ImJasonH/go,jacobsa/go,deft-code/go,cyberroadie/go,Cofyc/go,cyberroadie/go,dterei/go,Endika/go,malvira/go,suncycheng/go,odeke-em/go,suncycheng/go,vanloswang/go,sndnvaps/go,cloudflare/go,binarycrusader/go,cloudflare/go,momchil-velikov/go,codestation/go,rachtsingh/gogojuice,odeke-em/go,codestation/go,deft-code/go,Jordanzuo/go,polyverse-security/go,fjballest/golang,Samurais/go,derekmarcotte/go,goodlang/good,suncycheng/go,gdey/go,theif519/go,nawawi/go,rachtsingh/gogojuice,deft-code/go,jacobsa/go,josharian/go,kim-racktop/go,jacobsa/go,vanloswang/go,odeke-em/go,linux-on-ibm-z/go,josharian/go,cyberroadie/go,fjballest/golang,jacobsa/go,Samurais/go,vanloswang/go,polyverse-security/go,polyverse-security/go,codestation/go,jacobsa/go,kim-racktop/go,sndnvaps/go,vsekhar/elastic-go,Samurais/go,malvira/go,mwhudson/go,golang/go,roth1002/go,ganboing/go-esx,Endika/go,ImJasonH/go