Don't crash when cancelling an uninstall of a nonexistent package

We bring up the UI with a friendly "hey this app does not exist" mode,
but in the abort flow we were implicitly assuming that the target app
info was properly initialized, and NPEing.  Now we aren't.

Bug 19676670

Change-Id: I017632caa51d0f1b354fdd48ad4867d245357680
1 file changed
tree: 93ca6d6041e8a8ffe5812cdb89c0c9996f18bf81
  1. PermissionController/