raft: fix #6096
raft: fix #6096

mkumatag/etcd,armstrongli/etcd,etcd-io/etcd,hongchaodeng/etcd,hongchaodeng/etcd,jlamillan/etcd,ktateish/etcd,rnaveiras/etcd,handsomesun/etcd,qqsun8819/etcd,heyitsanthony/etcd,mqliang/etcd,YuleiXiao/etcd,sinsharat/etcd,yudai/etcd,insequent/etcd,purpleidea/etcd,swingbach/etcd,coreos/etcd,a-robinson/etcd,mickep76/etcd,etcd-io/etcd,insequent/etcd,OyTao/etcd_learning,coreos/etcd,rnaveiras/etcd,ajityagaty/etcd,cockroachdb/etcd,xiang90/etcd,gyuho/etcd,jlamillan/etcd,rnaveiras/etcd,akauppi/etcd,luxas/etcd,swingbach/etcd,bdarnell/etcd,cockroachdb/etcd,purpleidea/etcd,zaphod-concur/etcd,vimalk78/etcd,rchicoli/etcd,mqliang/etcd,tguangch/etcd,li-ang/etcd,whuwxl/etcd,xiang90/etcd,lumjjb/etcd,joshix/etcd,a-robinson/etcd,sebrandon1/etcd,YuleiXiao/etcd,zaphod-concur/etcd,ajityagaty/etcd,ravigadde/etcd,fanminshi/etcd,lorneli/etcd,linuxcer/etcd,rchicoli/etcd,nekto0n/etcd,CrazyJvm/etcd,akauppi/etcd,jonboulle/etcd,sebrandon1/etcd,jonboulle/etcd,endocode/etcd,etcd-io/etcd,endocode/etcd,handsomesun/etcd,mickep76/etcd,linuxcer/etcd,vimalk78/etcd,dannysauer/etcd,bluebreezecf/etcd,plasticbox/etcd,joshix/etcd,mkumatag/etcd,glevand/coreos--etcd,plasticbox/etcd,qqsun8819/etcd,lumjjb/etcd,sinsharat/etcd,luxas/etcd,ajityagaty/etcd,visheshnp/etcd,OyTao/etcd_learning,gyuho/etcd,glycerine/etcd,bdarnell/etcd,dannysauer/etcd,ravigadde/etcd,ktateish/etcd,lorneli/etcd,bluebreezecf/etcd,armstrongli/etcd,fanminshi/etcd,glevand/coreos--etcd,CrazyJvm/etcd,visheshnp/etcd,glycerine/etcd,heyitsanthony/etcd,whuwxl/etcd,mqliang/etcd,li-ang/etcd,mkumatag/etcd,nekto0n/etcd,tguangch/etcd,yudai/etcd