Don't beginUpdates/endUpdates on cell relayout if data source is gone (#2248)
Don't beginUpdates/endUpdates on cell relayout if data source is gone (#2248)


Adlai-Holler/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,smyrgl/AsyncDisplayKit,smyrgl/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,gazreese/AsyncDisplayKit,samhsiung/AsyncDisplayKit,gazreese/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,facebook/AsyncDisplayKit,rahul-malik/AsyncDisplayKit,rahul-malik/AsyncDisplayKit,romyilano/AsyncDisplayKit,smyrgl/AsyncDisplayKit,flovouin/AsyncDisplayKit,Adlai-Holler/AsyncDisplayKit,samhsiung/AsyncDisplayKit,bimawa/AsyncDisplayKit,george-gw/AsyncDisplayKit,rmls/AsyncDisplayKit,facebook/AsyncDisplayKit,JetZou/AsyncDisplayKit,harryworld/AsyncDisplayKit,flovouin/AsyncDisplayKit,lappp9/AsyncDisplayKit,JetZou/AsyncDisplayKit,maicki/AsyncDisplayKit,JetZou/AsyncDisplayKit,george-gw/AsyncDisplayKit,rmls/AsyncDisplayKit,harryworld/AsyncDisplayKit,flovouin/AsyncDisplayKit,rmls/AsyncDisplayKit,maicki/AsyncDisplayKit,samhsiung/AsyncDisplayKit,Adlai-Holler/AsyncDisplayKit,JetZou/AsyncDisplayKit,aaronschubert0/AsyncDisplayKit,lappp9/AsyncDisplayKit,gazreese/AsyncDisplayKit,aaronschubert0/AsyncDisplayKit,flovouin/AsyncDisplayKit,harryworld/AsyncDisplayKit,romyilano/AsyncDisplayKit,rmls/AsyncDisplayKit,harryworld/AsyncDisplayKit,romyilano/AsyncDisplayKit,JetZou/AsyncDisplayKit,aaronschubert0/AsyncDisplayKit,Adlai-Holler/AsyncDisplayKit,bimawa/AsyncDisplayKit,bimawa/AsyncDisplayKit,facebook/AsyncDisplayKit,george-gw/AsyncDisplayKit,Adlai-Holler/AsyncDisplayKit,maicki/AsyncDisplayKit,maicki/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,smyrgl/AsyncDisplayKit,samhsiung/AsyncDisplayKit,chrisdanford/AsyncDisplayKit,facebook/AsyncDisplayKit,bimawa/AsyncDisplayKit,george-gw/AsyncDisplayKit,chrisdanford/AsyncDisplayKit,rahul-malik/AsyncDisplayKit,flovouin/AsyncDisplayKit,gazreese/AsyncDisplayKit,lappp9/AsyncDisplayKit,aaronschubert0/AsyncDisplayKit,romyilano/AsyncDisplayKit,lappp9/AsyncDisplayKit,rmls/AsyncDisplayKit,maicki/AsyncDisplayKit,rahul-malik/AsyncDisplayKit,harryworld/AsyncDisplayKit,chrisdanford/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,chrisdanford/AsyncDisplayKit,aaronschubert0/AsyncDisplayKit