urbanairship/ios-library — pull request #30 by brow (2012-11-09 19:22:01+00:00)
Title: Fix crash associated with +[NSUserDefaults resetStandardUserDefaults] 

An app using libUAirship is liable to crash anytime after calling `+[NSUserDefaults resetStandardUserDefaults]`. This is because UAPush keeps a weak reference to an instance of NSUserDefaults obtained via `+[NSUserDefaults standardUserDefault]`, which is released and possibly deallocated by `+[NSUserDefaults resetStandardUserDefaults]`.