iOS: Fix a bug I just introduced that could cause the color buffer to not be rebound on iOS 3. GLES2 this time.
iOS: Fix a bug I just introduced that could cause the color buffer to not be rebound on iOS 3. GLES2 this time.

bhlzlx/ogre,bhlzlx/ogre,ehsan/ogre,ruleless/ogre,bhlzlx/ogre,bhlzlx/ogre,ruleless/ogre,ehsan/ogre,ehsan/ogre,bhlzlx/ogre,ruleless/ogre,ruleless/ogre,ehsan/ogre,ruleless/ogre,ehsan/ogre,ruleless/ogre,bhlzlx/ogre