Fixed #5757: fixed a bug of cc.Scale9Sprite after migrated
Merge branch 'develop' of git://github.com/cocos2d/cocos2d-html5 into Iss5757_Scale9Sprite
Merge branch 'develop' of git://github.com/cocos2d/cocos2d-html5 into Iss5757_Scale9Sprite
Merge pull request #2020 from dingpinglv/Iss5757_Scale9Sprite

Fixed #5757: fixed a bug of cc.Scale9Sprite after migrated