[1.1.X] Fixed #13108 -- Corrected an ambiguity in test data with the potential...

[1.1.X] Fixed #13108 -- Corrected an ambiguity in test data with the potential to cause test failures out of the box. Thanks to benreynwar for the report.

Backport of r12778 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@12779 bcc190cf-cafb-0310-a4f2-bffc1f526a37