From b136a9c9d718e6cc717aef45daec9e8b28423b06 Mon Sep 17 00:00:00 2001
From: Raymond Hettinger <python@rcn.com>
Date: Sun, 18 Apr 2010 20:28:33 +0000
Subject: [PATCH] Issue 8420: Fix ref counting problem in set_repr().

---
 Objects/setobject.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/Objects/setobject.c b/Objects/setobject.c
index 742dadcaa2b..d2a55fc313f 100644
--- a/Objects/setobject.c
+++ b/Objects/setobject.c
@@ -601,10 +601,8 @@ set_repr(PySetObject *so)
 
 	listrepr = PyObject_Repr(keys);
 	Py_DECREF(keys);
-	if (listrepr == NULL) {
-		Py_DECREF(keys);
+	if (listrepr == NULL)
 		goto done;
-	}
 	newsize = PyUnicode_GET_SIZE(listrepr);
 	result = PyUnicode_FromUnicode(NULL, newsize);
 	if (result) {