Fixed the fix from [7775].

The previous change was failing Django's "check for well-formed domain name"
validation, rather than failing on the network side. Providing we don't ever
set up www.broken.djangoproject.com as a valid domain name, this change should
let us control our own destiny.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@7776 bcc190cf-cafb-0310-a4f2-bffc1f526a37