appcelerator/titanium_mobile — pull request #6229 by vishalduggal (2014-10-16 18:40:31+00:00)
Title: [TIMOB-17704] (3_4_X) XHR onreadystatechange called multiple times

Cherry Pick PR #6228 to 3_4_X

Fixes [TIMOB-17704](https://jira.appcelerator.org/browse/TIMOB-17704)