Fixed #8536 -- Made sure the makemessages management command cleans up after...

Fixed #8536 -- Made sure the makemessages management command cleans up after throwing an error. Thanks to Ramiro for the initial patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@15506 bcc190cf-cafb-0310-a4f2-bffc1f526a37