Fixing crash after changing Dictionary::createWithContentOfFile() to return autorelease object. [ci skip].
Merge pull request #3686 from dumganhar/iss2087-new-event-dispatcher

Fixing crash after changing Dictionary::createWithContentOfFile() to return autorelease object. [ci skip].
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into developTest