[1.6.x] Corrected scoping of savepoint example
[1.6.x] Corrected scoping of savepoint example

Backport of 27f68f8659a648cc9ed3e71f690959ed8a130c5a from master

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