Fix error when updating text of the CCLabel.  The missing characters were not being updated.
Fix error when updating text of the CCLabel.  The missing characters were not being updated.

haithemaraissia/CocosSharp,mono/CocosSharp,hig-ag/CocosSharp,zmaruo/CocosSharp,haithemaraissia/CocosSharp,TukekeSoft/CocosSharp,mono/cocos2d-xna,MSylvia/CocosSharp,zmaruo/CocosSharp,netonjm/CocosSharp,mono/CocosSharp,TukekeSoft/CocosSharp,mono/cocos2d-xna,hig-ag/CocosSharp,netonjm/CocosSharp,MSylvia/CocosSharp