wal: simplify dir.Close call
wal: simplify dir.Close call

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