bitly/bitly_ios_sdk — pull request #3 by justinelsberry (2012-08-21 00:22:17+00:00)
Title: Setup foreground observer correctly so it will be removed when the view is hidden 

The UIApplicationWillEnterForegroundNotification observer was not being
removed when the tweet sheet was hidden so if access to the Twitter
accounts was denied in iOS 5+ then whenever the app entered the
foreground it would constantly ask for permission to access the
accounts.