fix ivar warning
fix ivar warning

fixes #3108

neslom/bundler,suhastech/bundler,mpapis/bundler,mdorrance/bundler,cdwort/bundler,zhangkuaiji/bundler,cstrahan/bundler,ximus/bundler,EasonYi/bundler,ngpestelos/bundler,philnash/bundler,schaary/bundler,chef/bundler,simplybusiness/bundler,danimashu/bundler,masarakki/bundler,neslom/bundler,cdwort/bundler,anil826/bundler,jasonkarns/bundler,joshsoftware/bundler,jingweno/bundler,jasonkarns/bundler,christer155/bundler,bronzdoc/bundler,christer155/bundler,zhangkuaiji/bundler,elovelan/bundler,vemmaverve/bundler,ligi/bundler,pivotal-cf-experimental/bundler,agis-/bundler,dilumnavanjana/bundler,bronzdoc/bundler,sideci-sample/sideci-sample-bundler,davydovanton/bundler,haonaturel/bundler,RochesterinNYC/bundler,philnash/bundler,chulkilee/bundler,mattbrictson/bundler-1,mattbrictson/bundler-1,byroot/bundler,tgxworld/bundler,joshsoftware/bundler,robinboening/bundler,jingweno/bundler,Eric-Guo/bundler,haocafes/bundler,nju520/bundler,ipmobiletech/bundler,elovelan/bundler,patvice/bundler,asutoshpalai/bundler,agis-/bundler,EasonYi/bundler,wenderjean/bundler,haonature/bundler,schaary/bundler,ngpestelos/bundler,asymmetric/bundler,tgxworld/bundler,mvz/bundler,frsyuki/bundler,AiyionPrime/bundler,TimMoore/bundler,steved/bundler,RochesterinNYC/bundler,Eric-Guo/bundler,danimashu/bundler,sideci-sample/sideci-sample-bundler,CorainChicago/bundler,simplybusiness/bundler,Wirachmat/bundler,davydovanton/bundler,anil826/bundler,TimMoore/bundler,e2/bundler,ligi/bundler,h4ck3rm1k3/bundler,ximus/bundler,EthanK28/bundler,frsyuki/bundler,kohgpat/bundler,roseweixel/bundler,roseweixel/bundler,Teino1978-Corp/Teino1978-Corp-bundler,robinboening/bundler,EthanK28/bundler,PG-kura/bundler,ipmobiletech/bundler,bundler/bundler,wenderjean/bundler,pivotal-cf-experimental/bundler,mdorrance/bundler,carpodaster/bundler,PG-kura/bundler,Wirachmat/bundler,AiyionPrime/bundler,seanlinsley/bundler,mvz/bundler,suhastech/bundler,chulkilee/bundler,asymmetric/bundler,CorainChicago/bundler,seanlinsley/bundler,masarakki/bundler,lmtim/bundler,patvice/bundler,h4ck3rm1k3/bundler,bundler/bundler,carpodaster/bundler,smlance/bundler,mpapis/bundler,gregkare/bundler,pjump/bundler,lmtim/bundler,gregkare/bundler,pjump/bundler,steved/bundler,dilumnavanjana/bundler,Teino1978-Corp/Teino1978-Corp-bundler,asutoshpalai/bundler,haonature888/bundler,Elffers/bundler,kohgpat/bundler,twcctz500000/bundler,Elffers/bundler,cstrahan/bundler,smlance/bundler,chef/bundler,nju520/bundler,jaym/bundler,byroot/bundler,jaym/bundler