Gamua/Starling-Framework — pull request #606 by johnikx (2014-08-21 09:18:57+00:00)
Title: add check for http response status code

Some old versions of Adobe AIR have a bug - https://bugbase.adobe.com/index.cfm?event=bug&id=3197184. Even if the asset can't be loaded (response contains 404 http status code), URLLoader dispatches Event.COMPLETE event (instead of IOErrorEvent.IO_ERROR).