mozilla-b2g/gaia-email-libs-and-more — pull request #187 by mozsquib (2013-04-23 19:37:15+00:00)
Title: Bug 852003 - [email] ActiveSync mimetype-guessing fails for files with non-lowercase extensions (e.g. foo.PNG)

r? @asutherland: This is a really simple fix that I've confirmed works in the email app. Not much else to say here. No tests, though I could add some.

https://bugzilla.mozilla.org/show_bug.cgi?id=852003