Fixed exceptions when trying to remove the same Action multiple times
Fixed exceptions when trying to remove the same Action multiple times

fkiller/cocos2d-javascript,ryanwilliams/cocos2d-javascript,ryanwilliams/cocos2d-javascript,ryanwilliams/cocos2d-javascript,synaptek/cocos2d-javascript,synaptek/cocos2d-javascript,ryanwilliams/cocos2d-javascript,fkiller/cocos2d-javascript,synaptek/cocos2d-javascript,ryanwilliams/cocos2d-javascript,synaptek/cocos2d-javascript,fkiller/cocos2d-javascript,synaptek/cocos2d-javascript