Fixed geographic admin to be compatible with `ModelAdmin.formfield_for_dbfield` changes in r9760.
Fixed geographic admin to be compatible with `ModelAdmin.formfield_for_dbfield` changes in r9760.


git-svn-id: 554f83ef17aa7291f84efa897c1acfc5d0035373@9763 bcc190cf-cafb-0310-a4f2-bffc1f526a37

svn2github/django,svn2github/django,svn2github/django