Fixed a regression in the Postgres psycopg cursor handling introduced…

… by r12352. Thanks to Kenneth Gonsalves for the report, and Karen for the fix.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12378 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/backends/postgresql/base.py

@@ -54,7 +54,7 @@ def format_params(self, params):
 
     def execute(self, sql, params=()):
         try:
-            return self.cursor.execute(sql, params)
+            return self.cursor.execute(smart_str(sql, self.charset), self.format_params(params))
         except Database.IntegrityError, e:
             raise utils.IntegrityError, utils.IntegrityError(*tuple(e)), sys.exc_info()[2]
         except Database.DatabaseError, e: