Fixed #11032: close() a file explictly open()'d in a test, so that deleting...

Fixed #11032: close() a file explictly open()'d in a test, so that deleting the file tree it is in doesn't fail on Windows.  Thanks bthomas for the patch.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@10741 bcc190cf-cafb-0310-a4f2-bffc1f526a37