[attributedlabel] Avoid crashes when calculating size of nil attributed string.
[attributedlabel] Avoid crashes when calculating size of nil attributed string.

DreamHill/nimbus,SuPair/nimbus,xiaohongjun0509/nimbus,dieface/nimbus,liuwu/nimbus,bangquangvn/nimbus,mohsinalimat/nimbus,JyHu/nimbus,treejames/nimbus,jverkoey/nimbus,LcongGitHub/nimbus,DreamHill/nimbus,0xced/nimbus,kviksilver/nimbus,djMax/nimbus,michaelShab/nimbus,hanangellove/nimbus,marcobgoogle/nimbus,pilot34/nimbus_fork,WeeTom/nimbus,Guokr1991/nimbus,djMax/nimbus,Guokr1991/nimbus,liuwu/nimbus,jverkoey/nimbus,dachaoisme/nimbus,bangquangvn/nimbus,JyHu/nimbus,panume/nimbus,mohsinalimat/nimbus,quyixia/nimbus,pilot34/nimbus_fork,dmishe/nimbus,weiyanwu1984/nimbus,compositeprimes/nimbus,cnbin/nimbus,weiyanwu1984/nimbus,zaichang/nimbus,dachaoisme/nimbus,SuPair/nimbus,bangquangvn/nimbus,hanangellove/nimbus,panume/nimbus,dmishe/nimbus,quyixia/nimbus,SuPair/nimbus,chanffdavid/nimbus,panume/nimbus,tranhieutt/nimbus,pilot34/nimbus_fork,weiyanwu1984/nimbus,zaichang/nimbus,pilot34/nimbus_fork,compositeprimes/nimbus,zilaiyedaren/nimbus,JyHu/nimbus,veue/nimbus,dieface/nimbus,mohsinalimat/nimbus,JyHu/nimbus,dmishe/nimbus,quyixia/nimbus,bangquangvn/nimbus,marcobgoogle/nimbus,LcongGitHub/nimbus,mohsinalimat/nimbus,dieface/nimbus,dachaoisme/nimbus,ycaihua/nimbus,bogardon/nimbus,kisekied/nimbus,bogardon/nimbus,andaluz/nimbus,tranhieutt/nimbus,cnbin/nimbus,WeeTom/nimbus,kviksilver/nimbus,WeeTom/nimbus,cnbin/nimbus,tranhieutt/nimbus,michaelShab/nimbus,dachaoisme/nimbus,bogardon/nimbus,cnbin/nimbus,tranhieutt/nimbus,dieface/nimbus,djMax/nimbus,kviksilver/nimbus,bogardon/nimbus,WeeTom/nimbus,compositeprimes/nimbus,zilaiyedaren/nimbus,JyHu/nimbus,jverkoey/nimbus,panume/nimbus,Arcank/nimbus,ycaihua/nimbus,ycaihua/nimbus,xiaohongjun0509/nimbus,Arcank/nimbus,djMax/nimbus,ycaihua/nimbus,xiaohongjun0509/nimbus,DreamHill/nimbus,0xced/nimbus,veue/nimbus,hanangellove/nimbus,dmishe/nimbus,compositeprimes/nimbus,liuwu/nimbus,weiyanwu1984/nimbus,chanffdavid/nimbus,zaichang/nimbus,zilaiyedaren/nimbus,panume/nimbus,xiaohongjun0509/nimbus,chanffdavid/nimbus,bangquangvn/nimbus,quyixia/nimbus,zilaiyedaren/nimbus,treejames/nimbus,compositeprimes/nimbus,andaluz/nimbus,dieface/nimbus,treejames/nimbus,chanffdavid/nimbus,dieface/nimbus,Guokr1991/nimbus,DreamHill/nimbus,hanangellove/nimbus,hanangellove/nimbus,dmishe/nimbus,panume/nimbus,veue/nimbus,pilot34/nimbus_fork,jverkoey/nimbus,jverkoey/nimbus,weiyanwu1984/nimbus,quyixia/nimbus,Arcank/nimbus,marcobgoogle/nimbus,bangquangvn/nimbus,cnbin/nimbus,andaluz/nimbus,quyixia/nimbus,chanffdavid/nimbus,veue/nimbus,ycaihua/nimbus,bogardon/nimbus,cnbin/nimbus,andaluz/nimbus,dachaoisme/nimbus,ycaihua/nimbus,DreamHill/nimbus,michaelShab/nimbus,djMax/nimbus,liuwu/nimbus,pilot34/nimbus_fork,Guokr1991/nimbus,zaichang/nimbus,mohsinalimat/nimbus,JyHu/nimbus,weiyanwu1984/nimbus,treejames/nimbus,michaelShab/nimbus,bogardon/nimbus,treejames/nimbus,kisekied/nimbus,JyHu/nimbus,compositeprimes/nimbus,quyixia/nimbus,SuPair/nimbus,Guokr1991/nimbus,0xced/nimbus,zilaiyedaren/nimbus,tranhieutt/nimbus,kviksilver/nimbus,0xced/nimbus,SuPair/nimbus,DreamHill/nimbus,Arcank/nimbus,bogardon/nimbus,marcobgoogle/nimbus,kisekied/nimbus,WeeTom/nimbus,SuPair/nimbus,liuwu/nimbus,pilot34/nimbus_fork,xiaohongjun0509/nimbus,michaelShab/nimbus,LcongGitHub/nimbus,kisekied/nimbus,veue/nimbus,compositeprimes/nimbus,zilaiyedaren/nimbus,mohsinalimat/nimbus,treejames/nimbus,andaluz/nimbus,marcobgoogle/nimbus,hanangellove/nimbus,dachaoisme/nimbus,zaichang/nimbus,LcongGitHub/nimbus,liuwu/nimbus,andaluz/nimbus,tranhieutt/nimbus,WeeTom/nimbus,Arcank/nimbus,jverkoey/nimbus,dmishe/nimbus,michaelShab/nimbus,LcongGitHub/nimbus,Arcank/nimbus,kviksilver/nimbus,marcobgoogle/nimbus,chanffdavid/nimbus,LcongGitHub/nimbus,djMax/nimbus,Guokr1991/nimbus,0xced/nimbus,zaichang/nimbus,kviksilver/nimbus,jverkoey/nimbus,Arcank/nimbus,kisekied/nimbus,marcobgoogle/nimbus,0xced/nimbus,xiaohongjun0509/nimbus,kisekied/nimbus