Add lock on ASTextNode.attributedText (#3025)
Add lock on ASTextNode.attributedText (#3025)


maicki/AsyncDisplayKit,lappp9/AsyncDisplayKit,lappp9/AsyncDisplayKit,maicki/AsyncDisplayKit,flovouin/AsyncDisplayKit,flovouin/AsyncDisplayKit,maicki/AsyncDisplayKit,flovouin/AsyncDisplayKit,lappp9/AsyncDisplayKit,maicki/AsyncDisplayKit,flovouin/AsyncDisplayKit,flovouin/AsyncDisplayKit,lappp9/AsyncDisplayKit,maicki/AsyncDisplayKit