Fixed a mistake of cc.AudioEngine that it can't stop a music when the music is loop
Merge branch 'develop' of git://github.com/cocos2d/cocos2d-html5 into Iss5805_Async
Fixed a mistake of cc.AudioEngine that it can't stop a music when the music is loop
Merge pull request #2111 from dingpinglv/Iss5805_Async

Fixed a mistake of cc.AudioEngine that it can't stop a music when the music is loop