Only create a placeholder with a valid size
Only create a placeholder with a valid size

fixes #179

tharhtet/AsyncDisplayKit,eeeyes/AsyncDisplayKit,rahul-malik/AsyncDisplayKit,rmls/AsyncDisplayKit,msdgwzhy6/AsyncDisplayKit,smyrgl/AsyncDisplayKit,garrettmoon/AsyncDisplayKit,romyilano/AsyncDisplayKit,Teino1978-Corp/Teino1978-Corp-AsyncDisplayKit,treejames/AsyncDisplayKit,steveram/AsyncDisplayKit,gazreese/AsyncDisplayKit,ppamorim/AsyncDisplayKit,michaelvillar/AsyncDisplayKit,NghiaTranUIT/AsyncDisplayKit,codepython/AsyncDisplayKit,jellenbogen/AsyncDisplayKit,angi2/AsyncDisplayKit,sabby3861/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,dskatz22/AsyncDisplayKit,supriyantomaftuh/AsyncDisplayKit,rcancro/AsyncDisplayKit,KacheFlowe/AsyncDisplayKit,DanielAsher/AsyncDisplayKit,dskatz22/AsyncDisplayKit,zhangyabinzyb/AsyncDisplayKit,aaronschubert0/AsyncDisplayKit,levi/AsyncDisplayKit,zeyang101909/AsyncDisplayKit,zhangyabinzyb/AsyncDisplayKit,dskatz22/AsyncDisplayKit,steveram/AsyncDisplayKit,nrcmedia/AsyncDisplayKit,ERussel/AsyncDisplayKit,paulyoung/AsyncDisplayKit,yufenglv/AsyncDisplayKit,zdw19840929/AsyncDisplayKit,dskatz22/AsyncDisplayKit,hbucius/AsyncDisplayKit,pytouzain/AsyncDisplayKit,paulyoung/AsyncDisplayKit,KacheFlowe/AsyncDisplayKit,rcancro/AsyncDisplayKit,hejunbinlan/AsyncDisplayKit,lappp9/AsyncDisplayKit,flovouin/AsyncDisplayKit,rmls/AsyncDisplayKit,frankenthumbs/AsyncDisplayKit,supriyantomaftuh/AsyncDisplayKit,hannahmbanana/AsyncDisplayKit,marmelroy/AsyncDisplayKit,yangyangluoluo/AsyncDisplayKit,michaelvillar/AsyncDisplayKit,k1ok3n/AsyncDisplayKit,donpark/AsyncDisplayKit,k1ok3n/AsyncDisplayKit,pytouzain/AsyncDisplayKit,zhangyabinzyb/AsyncDisplayKit,programming086/AsyncDisplayKit,dvan001/AsyncDisplayKit,maicki/AsyncDisplayKit,donpark/AsyncDisplayKit,marmelroy/AsyncDisplayKit,benzguo/AsyncDisplayKit,ppamorim/AsyncDisplayKit,garrettmoon/AsyncDisplayKit,george-gw/AsyncDisplayKit,harryworld/AsyncDisplayKit,msdgwzhy6/AsyncDisplayKit,eanagel/AsyncDisplayKit,ppamorim/AsyncDisplayKit,DanielAsher/AsyncDisplayKit,meitianapp/AsyncDisplayKit,sabby3861/AsyncDisplayKit,owenwuef/AsyncDisplayKit,Adlai-Holler/AsyncDisplayKit,zeitgeist7/AsyncDisplayKit,frankenthumbs/AsyncDisplayKit,bimawa/AsyncDisplayKit,todotodoo/AsyncDisplayKit,benzguo/AsyncDisplayKit,msdgwzhy6/AsyncDisplayKit,benzguo/AsyncDisplayKit,zeyang101909/AsyncDisplayKit,TheoJL/AsyncDisplayKit,rahul-malik/AsyncDisplayKit,zeyang101909/AsyncDisplayKit,Xinchi/AsyncDisplayKit,wangjiangwen/AsyncDisplayKit,dvan001/AsyncDisplayKit,KacheFlowe/AsyncDisplayKit,levi/AsyncDisplayKit,xujim/AsyncDisplayKit,hannahmbanana/AsyncDisplayKit,tharhtet/AsyncDisplayKit,rcancro/AsyncDisplayKit,jflinter/AsyncDisplayKit,zdw19840929/AsyncDisplayKit,DanielAsher/AsyncDisplayKit,levi/AsyncDisplayKit,eanagel/AsyncDisplayKit,bimawa/AsyncDisplayKit,treejames/AsyncDisplayKit,harryworld/AsyncDisplayKit,garrettmoon/AsyncDisplayKit,rmls/AsyncDisplayKit,RuiAAPeres/AsyncDisplayKit,flovouin/AsyncDisplayKit,frankenthumbs/AsyncDisplayKit,facebook/AsyncDisplayKit,zeitgeist7/AsyncDisplayKit,tharhtet/AsyncDisplayKit,Xinchi/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,skullacy/AsyncDisplayKit,21451061/AsyncDisplayKit,meitianapp/AsyncDisplayKit,Cen92/AsyncDisplayKit,rcancro/AsyncDisplayKit,meitianapp/AsyncDisplayKit,supriyantomaftuh/AsyncDisplayKit,Adlai-Holler/AsyncDisplayKit,maicki/AsyncDisplayKit,garrettmoon/AsyncDisplayKit,codepython/AsyncDisplayKit,programming086/AsyncDisplayKit,rahul-malik/AsyncDisplayKit,nrcmedia/AsyncDisplayKit,samhsiung/AsyncDisplayKit,gazreese/AsyncDisplayKit,paulyoung/AsyncDisplayKit,harryworld/AsyncDisplayKit,programming086/AsyncDisplayKit,zeitgeist7/AsyncDisplayKit,todotodoo/AsyncDisplayKit,hannahmbanana/AsyncDisplayKit,garrettmoon/AsyncDisplayKit,lappp9/AsyncDisplayKit,rahul-malik/AsyncDisplayKit,donpark/AsyncDisplayKit,RuiAAPeres/AsyncDisplayKit,NghiaTranUIT/AsyncDisplayKit,eeeyes/AsyncDisplayKit,nivanchikov/AsyncDisplayKit,NghiaTranUIT/AsyncDisplayKit,JetZou/AsyncDisplayKit,meitianapp/AsyncDisplayKit,21451061/AsyncDisplayKit,200895045/AsyncDisplayKit,ppamorim/AsyncDisplayKit,hannahmbanana/AsyncDisplayKit,TheoJL/AsyncDisplayKit,rmls/AsyncDisplayKit,PodsMakleso6/AsyncDisplayKit,harryworld/AsyncDisplayKit,RuiAAPeres/AsyncDisplayKit,treejames/AsyncDisplayKit,lappp9/AsyncDisplayKit,nivanchikov/AsyncDisplayKit,nivanchikov/AsyncDisplayKit,yangyangluoluo/AsyncDisplayKit,angi2/AsyncDisplayKit,angi2/AsyncDisplayKit,DanielAsher/AsyncDisplayKit,kesiking/AsyncDisplayKit,owenwuef/AsyncDisplayKit,angi2/AsyncDisplayKit,yufenglv/AsyncDisplayKit,JetZou/AsyncDisplayKit,romyilano/AsyncDisplayKit,romyilano/AsyncDisplayKit,hejunbinlan/AsyncDisplayKit,codepython/AsyncDisplayKit,nivanchikov/AsyncDisplayKit,k1ok3n/AsyncDisplayKit,angi2/AsyncDisplayKit,nivanchikov/AsyncDisplayKit,smyrgl/AsyncDisplayKit,zdw19840929/AsyncDisplayKit,todotodoo/AsyncDisplayKit,kesiking/AsyncDisplayKit,hejunbinlan/AsyncDisplayKit,yufenglv/AsyncDisplayKit,pytouzain/AsyncDisplayKit,grgcombs/AsyncDisplayKit,programming086/AsyncDisplayKit,codepython/AsyncDisplayKit,todotodoo/AsyncDisplayKit,KacheFlowe/AsyncDisplayKit,supriyantomaftuh/AsyncDisplayKit,jflinter/AsyncDisplayKit,grgcombs/AsyncDisplayKit,michaelvillar/AsyncDisplayKit,DanielAsher/AsyncDisplayKit,flovouin/AsyncDisplayKit,chrisdanford/AsyncDisplayKit,kesiking/AsyncDisplayKit,TheoJL/AsyncDisplayKit,treejames/AsyncDisplayKit,maicki/AsyncDisplayKit,Xinchi/AsyncDisplayKit,grgcombs/AsyncDisplayKit,hejunbinlan/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,eanagel/AsyncDisplayKit,eeeyes/AsyncDisplayKit,owenwuef/AsyncDisplayKit,gazreese/AsyncDisplayKit,mtxs007/AsyncDisplayKit,george-gw/AsyncDisplayKit,maicki/AsyncDisplayKit,adamdahan/AsyncDisplayKit,yufenglv/AsyncDisplayKit,frankenthumbs/AsyncDisplayKit,NghiaTranUIT/AsyncDisplayKit,Teino1978-Corp/Teino1978-Corp-AsyncDisplayKit,aaronschubert0/AsyncDisplayKit,xujim/AsyncDisplayKit,chrisdanford/AsyncDisplayKit,zeyang101909/AsyncDisplayKit,PodsMakleso6/AsyncDisplayKit,donpark/AsyncDisplayKit,yangyangluoluo/AsyncDisplayKit,Adlai-Holler/AsyncDisplayKit,xujim/AsyncDisplayKit,wangjiangwen/AsyncDisplayKit,aaronschubert0/AsyncDisplayKit,facebook/AsyncDisplayKit,hbucius/AsyncDisplayKit,hbucius/AsyncDisplayKit,Xinchi/AsyncDisplayKit,wangjiangwen/AsyncDisplayKit,nrcmedia/AsyncDisplayKit,jellenbogen/AsyncDisplayKit,yangyangluoluo/AsyncDisplayKit,wangjiangwen/AsyncDisplayKit,lappp9/AsyncDisplayKit,donpark/AsyncDisplayKit,PodsMakleso6/AsyncDisplayKit,RuiAAPeres/AsyncDisplayKit,Xinchi/AsyncDisplayKit,nrcmedia/AsyncDisplayKit,zeitgeist7/AsyncDisplayKit,yangyangluoluo/AsyncDisplayKit,marmelroy/AsyncDisplayKit,adamdahan/AsyncDisplayKit,200895045/AsyncDisplayKit,mtxs007/AsyncDisplayKit,200895045/AsyncDisplayKit,paulyoung/AsyncDisplayKit,Cen92/AsyncDisplayKit,george-gw/AsyncDisplayKit,RuiAAPeres/AsyncDisplayKit,ERussel/AsyncDisplayKit,zeitgeist7/AsyncDisplayKit,smyrgl/AsyncDisplayKit,dvan001/AsyncDisplayKit,romyilano/AsyncDisplayKit,smyrgl/AsyncDisplayKit,grgcombs/AsyncDisplayKit,gazreese/AsyncDisplayKit,samhsiung/AsyncDisplayKit,levi/AsyncDisplayKit,owenwuef/AsyncDisplayKit,adamdahan/AsyncDisplayKit,zeyang101909/AsyncDisplayKit,sabby3861/AsyncDisplayKit,kesiking/AsyncDisplayKit,Teino1978-Corp/Teino1978-Corp-AsyncDisplayKit,jflinter/AsyncDisplayKit,dvan001/AsyncDisplayKit,eeeyes/AsyncDisplayKit,mtxs007/AsyncDisplayKit,sabby3861/AsyncDisplayKit,JetZou/AsyncDisplayKit,skullacy/AsyncDisplayKit,zdw19840929/AsyncDisplayKit,ERussel/AsyncDisplayKit,bimawa/AsyncDisplayKit,skullacy/AsyncDisplayKit,michaelvillar/AsyncDisplayKit,Adlai-Holler/AsyncDisplayKit,k1ok3n/AsyncDisplayKit,adamdahan/AsyncDisplayKit,xujim/AsyncDisplayKit,george-gw/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,21451061/AsyncDisplayKit,flovouin/AsyncDisplayKit,TheoJL/AsyncDisplayKit,yufenglv/AsyncDisplayKit,jellenbogen/AsyncDisplayKit,jellenbogen/AsyncDisplayKit,JetZou/AsyncDisplayKit,frankenthumbs/AsyncDisplayKit,steveram/AsyncDisplayKit,tharhtet/AsyncDisplayKit,levi/AsyncDisplayKit,hannahmbanana/AsyncDisplayKit,zdw19840929/AsyncDisplayKit,jflinter/AsyncDisplayKit,dskatz22/AsyncDisplayKit,xujim/AsyncDisplayKit,Adlai-Holler/AsyncDisplayKit,maicki/AsyncDisplayKit,KacheFlowe/AsyncDisplayKit,ERussel/AsyncDisplayKit,steveram/AsyncDisplayKit,aaronschubert0/AsyncDisplayKit,nrcmedia/AsyncDisplayKit,chrisdanford/AsyncDisplayKit,JetZou/AsyncDisplayKit,msdgwzhy6/AsyncDisplayKit,Cen92/AsyncDisplayKit,PodsMakleso6/AsyncDisplayKit,programming086/AsyncDisplayKit,bimawa/AsyncDisplayKit,Teino1978-Corp/Teino1978-Corp-AsyncDisplayKit,rcancro/AsyncDisplayKit,chrisdanford/AsyncDisplayKit,michaelvillar/AsyncDisplayKit,NghiaTranUIT/AsyncDisplayKit,aaronschubert0/AsyncDisplayKit,harryworld/AsyncDisplayKit,200895045/AsyncDisplayKit,PodsMakleso6/AsyncDisplayKit,flovouin/AsyncDisplayKit,paulyoung/AsyncDisplayKit,k1ok3n/AsyncDisplayKit,marmelroy/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,eanagel/AsyncDisplayKit,skullacy/AsyncDisplayKit,Cen92/AsyncDisplayKit,facebook/AsyncDisplayKit,samhsiung/AsyncDisplayKit,pytouzain/AsyncDisplayKit,facebook/AsyncDisplayKit,samhsiung/AsyncDisplayKit,skullacy/AsyncDisplayKit,zhangyabinzyb/AsyncDisplayKit,benzguo/AsyncDisplayKit,rmls/AsyncDisplayKit,Teino1978-Corp/Teino1978-Corp-AsyncDisplayKit,eanagel/AsyncDisplayKit,mtxs007/AsyncDisplayKit,jellenbogen/AsyncDisplayKit,hbucius/AsyncDisplayKit,treejames/AsyncDisplayKit,21451061/AsyncDisplayKit