mozilla/addon-sdk — pull request #694 by Mossop (2012-12-19 00:21:13+00:00)
Title: Bug 817670: Catch exceptions from NetUtil.asyncFetch.

I suspect this will fix the perma-orange on OSX, but I do not have an OSX machine to test with. @erikvold, @zer0 can one of you test and review this?