Don't @synthesizeAssociation for weak properties
Don't @synthesizeAssociation for weak properties

KBvsMJ/libextobjc,sandyway/libextobjc,kolyuchiy/libextobjc,sunfei/libextobjc,sanojnambiar/libextobjc,liuruxian/libextobjc,goodheart/libextobjc,bboyesc/libextobjc,WPDreamMelody/libextobjc,telly/libextobjc,jiakai-lian/libextobjc