Fix incorrect use of `break` in retry loop in RPC client.
Fix incorrect use of `break` in retry loop in RPC client.

This caused a panic during tests in which a client would incorrectly
report success during the shutdown process.

Fixes #1563.

nieyy/cockroach,fengshao0907/cockroach,glycerine/cockroach,arypurnomoz/cockroach,yiixiansheng/cockroach,freakynit/cockroach,hassyma/cockroach,petermattis/cockroach,nkhuyu/cockroach,yiixiansheng/cockroach,c4pt0r/cockroach,cockroachdb/cockroach,il9ue/cockroach,freakynit/cockroach,ajayaa/cockroach,SustainFund/cockroach,bg451/cockroach,Abioy/cockroach,vaibhavarora/cockroach,c4pt0r/cockroach,jgautheron/cockroach,arypurnomoz/cockroach,vivekmenezes/cockroach,linearb/cockroach,GokulSrinivas/cockroach,XisiHuang/cockroach,veteranlu/cockroach,jmank88/cockroach,briceburg/cockroach,cuongdo/cockroach,arjun4084346/cockroach,nkhuyu/cockroach,petermattis/cockroach,alunarbeach/cockroach,mbonaci/cockroach,alunarbeach/cockroach,c4pt0r/cockroach,veteranlu/cockroach,paperstreet/cockroach,cockroachdb/cockroach,paperstreet/cockroach,cuongdo/cockroach,il9ue/cockroach,yiixiansheng/cockroach,chrisseto/cockroach,il9ue/cockroach,nkhuyu/cockroach,ajayaa/cockroach,petermattis/cockroach,jmank88/cockroach,yosiat/cockroach,paperstreet/cockroach,hassyma/cockroach,GokulSrinivas/cockroach,jmank88/cockroach,petermattis/cockroach,cuongdo/cockroach,vaibhavarora/cockroach,arjun4084346/cockroach,bg451/cockroach,SustainFund/cockroach,jmank88/cockroach,loucash/cockroach,GokulSrinivas/cockroach,yiixiansheng/cockroach,bg451/cockroach,il9ue/cockroach,nieyy/cockroach,alex/cockroach,arjun4084346/cockroach,abhishekgahlot/cockroach,bg451/cockroach,sunya123/cockroach,hassyma/cockroach,jess-edwards/cockroach,alunarbeach/cockroach,abhishekgahlot/cockroach,slavau/cockroach,vivekmenezes/cockroach,Abioy/cockroach,veteranlu/cockroach,cockroachdb/cockroach,SustainFund/cockroach,glycerine/cockroach,briceburg/cockroach,freakynit/cockroach,loucash/cockroach,GokulSrinivas/cockroach,mbonaci/cockroach,jess-edwards/cockroach,slavau/cockroach,petermattis/cockroach,glycerine/cockroach,paperstreet/cockroach,loucash/cockroach,sunya123/cockroach,cockroachdb/cockroach,yosiat/cockroach,abhishekgahlot/cockroach,veteranlu/cockroach,GokulSrinivas/cockroach,linearb/cockroach,bg451/cockroach,SustainFund/cockroach,ajayaa/cockroach,abhishekgahlot/cockroach,nieyy/cockroach,alex/cockroach,jess-edwards/cockroach,paperstreet/cockroach,marcuswestin/cockroach,alex/cockroach,linearb/cockroach,vaibhavarora/cockroach,vivekmenezes/cockroach,mbertschler/cockroach,yosiat/cockroach,chrisseto/cockroach,jamesgraves/cockroach,fengshao0907/cockroach,alex/cockroach,veteranlu/cockroach,slavau/cockroach,nieyy/cockroach,glycerine/cockroach,marcuswestin/cockroach,briceburg/cockroach,abhishekgahlot/cockroach,linearb/cockroach,marcuswestin/cockroach,jamesgraves/cockroach,veteranlu/cockroach,jess-edwards/cockroach,marcuswestin/cockroach,chrisseto/cockroach,cuongdo/cockroach,alunarbeach/cockroach,briceburg/cockroach,petermattis/cockroach,jmank88/cockroach,jess-edwards/cockroach,nkhuyu/cockroach,sunya123/cockroach,nieyy/cockroach,veteranlu/cockroach,arjun4084346/cockroach,arjun4084346/cockroach,cuongdo/cockroach,Abioy/cockroach,alunarbeach/cockroach,mbonaci/cockroach,briceburg/cockroach,nkhuyu/cockroach,veteranlu/cockroach,cockroachdb/cockroach,mbonaci/cockroach,Abioy/cockroach,il9ue/cockroach,marcuswestin/cockroach,maxlang/cockroach,mbertschler/cockroach,cockroachdb/cockroach,paperstreet/cockroach,ajayaa/cockroach,alex/cockroach,c4pt0r/cockroach,cuongdo/cockroach,loucash/cockroach,slavau/cockroach,slavau/cockroach,fengshao0907/cockroach,vaibhavarora/cockroach,fengshao0907/cockroach,jmank88/cockroach,freakynit/cockroach,briceburg/cockroach,XisiHuang/cockroach,maxlang/cockroach,linearb/cockroach,vivekmenezes/cockroach,XisiHuang/cockroach,marcuswestin/cockroach,alunarbeach/cockroach,maxlang/cockroach,petermattis/cockroach,jgautheron/cockroach,arjun4084346/cockroach,Abioy/cockroach,paperstreet/cockroach,mbertschler/cockroach,mbertschler/cockroach,jamesgraves/cockroach,slavau/cockroach,cockroachdb/cockroach,abhishekgahlot/cockroach,arjun4084346/cockroach,nieyy/cockroach,bg451/cockroach,nieyy/cockroach,il9ue/cockroach,loucash/cockroach,ajayaa/cockroach,jess-edwards/cockroach,Abioy/cockroach,sunya123/cockroach,cuongdo/cockroach,il9ue/cockroach,jgautheron/cockroach,glycerine/cockroach,arjun4084346/cockroach,jgautheron/cockroach,yosiat/cockroach,chrisseto/cockroach,sunya123/cockroach,hassyma/cockroach,vivekmenezes/cockroach,sunya123/cockroach,paperstreet/cockroach,vaibhavarora/cockroach,maxlang/cockroach,linearb/cockroach,XisiHuang/cockroach,linearb/cockroach,il9ue/cockroach,XisiHuang/cockroach,sunya123/cockroach,vaibhavarora/cockroach,vivekmenezes/cockroach,chrisseto/cockroach,arypurnomoz/cockroach,jamesgraves/cockroach,jamesgraves/cockroach,maxlang/cockroach,glycerine/cockroach,glycerine/cockroach,c4pt0r/cockroach,freakynit/cockroach,marcuswestin/cockroach,mbonaci/cockroach,freakynit/cockroach,mbertschler/cockroach,jess-edwards/cockroach,cuongdo/cockroach,arypurnomoz/cockroach,SustainFund/cockroach,chrisseto/cockroach,c4pt0r/cockroach,maxlang/cockroach,jgautheron/cockroach,yosiat/cockroach,marcuswestin/cockroach,hassyma/cockroach,yiixiansheng/cockroach,vivekmenezes/cockroach,loucash/cockroach,cockroachdb/cockroach,sunya123/cockroach,vaibhavarora/cockroach,mbertschler/cockroach,fengshao0907/cockroach,XisiHuang/cockroach,nkhuyu/cockroach,glycerine/cockroach,vivekmenezes/cockroach,jgautheron/cockroach,petermattis/cockroach,alex/cockroach,fengshao0907/cockroach,hassyma/cockroach,maxlang/cockroach,vaibhavarora/cockroach,jamesgraves/cockroach,jamesgraves/cockroach,yosiat/cockroach,GokulSrinivas/cockroach,arypurnomoz/cockroach,mbertschler/cockroach,ajayaa/cockroach,jmank88/cockroach,SustainFund/cockroach,mbonaci/cockroach,yiixiansheng/cockroach,maxlang/cockroach,nieyy/cockroach,arypurnomoz/cockroach,bg451/cockroach