Fixed #15703 -- Corrected problem in test suite introduced by Python 2.4...

Fixed #15703 -- Corrected problem in test suite introduced by Python 2.4 changes from r15927. Thanks to mk for the report and patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@15936 bcc190cf-cafb-0310-a4f2-bffc1f526a37