gis: Merged revisions 4669-4785 via svnmerge from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/gis@4786 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 3 insertions, 2 deletions

diff --git a/django/db/backends/postgresql_psycopg2/base.py b/django/db/backends/postgresql_psycopg2/base.py
index 9b319ad3c7..e4724e46fb 100644
--- a/django/db/backends/postgresql_psycopg2/base.py
+++ b/django/db/backends/postgresql_psycopg2/base.py
@@ -60,10 +60,11 @@ class DatabaseWrapper(local):
         return cursor
 
     def _commit(self):
-        return self.connection.commit()
+        if self.connection is not None:
+            return self.connection.commit()
 
     def _rollback(self):
-        if self.connection:
+        if self.connection is not None:
             return self.connection.rollback()
 
     def close(self):