[1.6.x] Fixed a test failure introduced in f0bc2865ff.
[1.6.x] Fixed a test failure introduced in f0bc2865ff.

`classobj` objects cannot be weakly referenced on Python 2.6

django-nonrel/django,django-nonrel/django,redhat-openstack/django,redhat-openstack/django,django-nonrel/django,redhat-openstack/django,django-nonrel/django,dex4er/django,felixjimenez/django,redhat-openstack/django,dex4er/django,felixjimenez/django,felixjimenez/django,felixjimenez/django,dex4er/django