Code freeze break request for Orca

[Joanmarie Diggs <joanied gnome org>]

Hi Release Team.

I'm seeking a code freeze break request for today for bug 660091. It's a
small, one-line change. Without this fix, users who have defined or
redefined Orca keybindings stand an excellent chance of not being able
to bring up Orca's Preferences dialog. :-/

Thanks in advance for your consideration.
--joanie