Fix CCScene where the default constructor passes null for the Director.
Fix CCScene where the default constructor passes null for the Director.

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