cocos2d/cocos2d-x — pull request #9543 by tjunxin (2014-12-18 05:51:26+00:00)
Title: comment line 83

As known, _glProgramStates is a cocos2d::Map container,it will call object->retain() when insert, and call position->second->release() when erase, so the statement of line 83 is redundant.
If i don't comment line 83, the application will crash when GLProgramStateCache::removeUnusedGLProgramState() is called.