diskqueue: dont display useless warning when file didn't exist
diskqueue: dont display useless warning when file didn't exist

mikeqian/nsq,mikedewar/nsq,mikeqian/nsq,ShinichR/nsq,kesutton/nsq,szqh97/nsq,JustinAzoff/nsq,kesutton/nsq,philipbo/nsq,mikeqian/nsq,CrazyJvm/nsq,jlr52/nsq,w4ngyi/nsq,jlr52/nsq,dinedal/nsq,w4ngyi/nsq,OlafRadicke/nsq,gaowenbin/nsq,propellerads/nsq,xuzhaokui/nsq,jmptrader/nsq,dmarkham/nsq,lytics/nsq,chaosue/nsq,xiexingguang/nsq,ploxiln/nsq,absolute8511/nsq,handsomesun/nsq,myhongkongzhen/nsq,philipbo/nsq,mikeqian/nsq,davegardnerisme/nsq,Dieterbe/nsq,nieanan/nsq,bo406/nsq,chaosue/nsq,rpau/nsq,xuzhaokui/nsq,JustinAzoff/nsq,fbjork/nsq,kesutton/nsq,sunminghong/nsq,bo406/nsq,Dieterbe/nsq,youxidev/nsq,handsomesun/nsq,sparklxb/nsq,judwhite/nsq-0.3.2-win,svmehta/nsq,moander/nsq,mreiferson/nsq,mynameisfiber/nsq,jmptrader/nsq,youxidev/nsq,ploxiln/nsq,seanluo/nsq_with_note,mreiferson/nsq,svmehta/nsq,nimmen/nsq,nsqio/nsq,wuxu92/nsq,wmydz1/nsq,magastzheng/nsq,wuxu92/nsq,myhongkongzhen/nsq,OlafRadicke/nsq,Dieterbe/nsq,MadBomber/nsq,bitly/nsq,w3hacker/nsq,bo406/nsq,absolute8511/nsq,danielhfrank/nsq,kevinc0825/nsq,fbjork/nsq,bitly/nsq,absolute8511/nsq,lcp0578/nsq,rpau/nsq,xiexingguang/nsq,nsqio/nsq,dustismo/nsq,szqh97/nsq,yh453926638/nsq,bo406/nsq,handsomesun/nsq,mreiferson/nsq,coderhaoxin/nsq,CrazyJvm/nsq,szqh97/nsq,ShinichR/nsq,bitly/nsq,yh453926638/nsq,chrisroberts/nsq,kevinc0825/nsq,sparklxb/nsq,sunminghong/nsq,xuzhaokui/nsq,datastream/nsq,qinlodestar/nsq,msn217/nsq,19hz/nsq,gaowenbin/nsq,ploxiln/nsq,chrislusf/nsq,msn217/nsq,nieanan/nsq,coderhaoxin/nsq,absolute8511/nsq,xiexingguang/nsq,moander/nsq,bitly/nsq,OlafRadicke/nsq,CrazyJvm/nsq,qinlodestar/nsq,nimmen/nsq,dustismo/nsq,gaowenbin/nsq,judwhite/nsq-0.3.2-win,nsqio/nsq,coderhaoxin/nsq,kevinc0825/nsq,lcp0578/nsq,youxidev/nsq,tophymastery/nsq,chrisroberts/nsq,dmarkham/nsq,sparklxb/nsq,mreiferson/nsq,philipbo/nsq,menghan/nsq,beni55/nsq,qinlodestar/nsq,szqh97/nsq,wmydz1/nsq,jehiah/nsq,lytics/nsq,magastzheng/nsq,w3hacker/nsq,msn217/nsq,gaowenbin/nsq,qinlodestar/nsq,mikedewar/nsq,jehiah/nsq,tophymastery/nsq,beni55/nsq,mashuai/nsq,yh453926638/nsq,magastzheng/nsq,19hz/nsq,jehiah/nsq,handsomesun/nsq,MadBomber/nsq,handsomesun/nsq,CrazyJvm/nsq,chrislusf/nsq,danielhfrank/nsq,w4ngyi/nsq,jmptrader/nsq,MadBomber/nsq,msn217/nsq,absolute8511/nsq,myhongkongzhen/nsq,bitly/nsq,msn217/nsq,mashuai/nsq,mikeqian/nsq,yh453926638/nsq,mynameisfiber/nsq,ploxiln/nsq,myhongkongzhen/nsq,nsqio/nsq,qinlodestar/nsq,jehiah/nsq,jlr52/nsq,shanemhansen/nsq,propellerads/nsq,myhongkongzhen/nsq,ShinichR/nsq,philipbo/nsq,jsocol/nsq,MadBomber/nsq,judwhite/nsq-0.3.2-win,mashuai/nsq,Dieterbe/nsq,rpau/nsq,menghan/nsq,philipbo/nsq,ShinichR/nsq,jehiah/nsq,jsocol/nsq,xiexingguang/nsq,CrazyJvm/nsq,gaowenbin/nsq,beni55/nsq,lcp0578/nsq,chaosue/nsq,propellerads/nsq,elubow/nsq,jlr52/nsq,beni55/nsq,coderhaoxin/nsq,wmydz1/nsq,mroth/nsq,rpau/nsq,datastream/nsq,Dieterbe/nsq,kesutton/nsq,w4ngyi/nsq,szqh97/nsq,JustinAzoff/nsq,wuxu92/nsq,bo406/nsq,coderhaoxin/nsq,dinedal/nsq,wmydz1/nsq,pombredanne/nsq,pombredanne/nsq,19hz/nsq,elubow/nsq,chaosue/nsq,sparklxb/nsq,mashuai/nsq,nsqio/nsq,xiexingguang/nsq,kesutton/nsq,nieanan/nsq,mroth/nsq,chrislusf/nsq,mikedewar/nsq,ploxiln/nsq,chaosue/nsq,MadBomber/nsq,mreiferson/nsq,danielhfrank/nsq,davegardnerisme/nsq,moander/nsq,sparklxb/nsq,lcp0578/nsq,yh453926638/nsq,beni55/nsq,seanluo/nsq_with_note,shanemhansen/nsq,ShinichR/nsq,mashuai/nsq,rpau/nsq,davegardnerisme/nsq,w4ngyi/nsq,lcp0578/nsq,wmydz1/nsq,jlr52/nsq