Fixed #9075: Added a call to close() in the example file upload handler....

Fixed #9075: Added a call to close() in the example file upload handler. Thanks to Brendan (bmsleight) for the suggestion.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9027 bcc190cf-cafb-0310-a4f2-bffc1f526a37