Fixed #16790 -- Modified the geographic admin to work after r16594. Thanks,...

Fixed #16790 -- Modified the geographic admin to work after r16594.  Thanks, jdiego, for the bug report and patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16775 bcc190cf-cafb-0310-a4f2-bffc1f526a37