Fixed a breakage with ManyToManyFields in admin caused by r10139.
Fixed a breakage with ManyToManyFields in admin caused by r10139.

git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@10170 bcc190cf-cafb-0310-a4f2-bffc1f526a37

t11e/django,Smarsh/django,Smarsh/django,Instagram/django,sam-tsai/django-old,t11e/django,skevy/django,bfirsh/django-old,alex/django-old,Smarsh/django,django-nonrel/django-nonrel,jamespacileo/django-france,Instagram/django,mitsuhiko/django,disqus/django-old,mitsuhiko/django,disqus/django-old,sam-tsai/django-old,sam-tsai/django-old,django-nonrel/django-nonrel,jamespacileo/django-france,mitsuhiko/django,bfirsh/django-old,skevy/django,Smarsh/django,skevy/django,sam-tsai/django-old,Instagram/django,bfirsh/django-old,django-nonrel/django-nonrel,jamespacileo/django-france,alex/django-old,t11e/django,alex/django-old,disqus/django-old