Fixed #5704: correct a mistake of cc.Sprite
Merge branch 'develop' of git://github.com/cocos2d/cocos2d-html5 into Iss5704_FixUIBug
Merge branch 'develop' of git://github.com/cocos2d/cocos2d-html5 into Iss5704_FixUIBug
Merge pull request #2059 from dingpinglv/Iss5704_FixUIBug

Fixed #5704: correct a mistake of cc.Sprite