From 8e8fbeae27e3fbfa80ad59fd2aeb563116e6a4c4 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Fri, 1 Jun 2012 23:57:36 -0700
Subject: [PATCH] don't leak if the __class__ closure is set

---
 Python/bltinmodule.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index e2ff0ba1c53..232e3dc4970 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -158,10 +158,8 @@ builtin___build_class__(PyObject *self, PyObject *args, PyObject *kwds)
             cls = PyEval_CallObjectWithKeywords(meta, margs, mkw);
             Py_DECREF(margs);
         }
-        if (cls != NULL && PyCell_Check(cell)) {
-            Py_INCREF(cls);
-            PyCell_SET(cell, cls);
-        }
+        if (cls != NULL && PyCell_Check(cell))
+            PyCell_Set(cell, cls);
         Py_DECREF(cell);
     }
     Py_DECREF(ns);