facebook/three20 — pull request #784 by kemenaran (2012-03-08 13:46:05+00:00)
Title: Fix popover crash in navigator

When the TTBaseNavigator creates a new popover, it does it using the `-init` message.

This throws an exception on iOS 4.3 and iOS 5.1: the UIPopoverController designated initializer is actually `-initWithContentViewController:`.

The fix uses the correct message, and thus prevents the crash.