From 4563bf7300d9ba4d2bf1eee048355d96dacd15af Mon Sep 17 00:00:00 2001
From: Pablo Galindo <pablogsal@gmail.com>
Date: Sat, 24 Jul 2021 14:25:08 +0100
Subject: [PATCH] bpo-44676: Fix reference leaks in union_reduce

---
 Objects/unionobject.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Objects/unionobject.c b/Objects/unionobject.c
index ea4aed86f839eed..54cdedae4d92c98 100644
--- a/Objects/unionobject.c
+++ b/Objects/unionobject.c
@@ -445,7 +445,7 @@ union_reduce(PyObject *self, PyObject *Py_UNUSED(ignored))
         return NULL;
     }
 
-    return Py_BuildValue("O(O)", from_args, alias->args);
+    return Py_BuildValue("N(O)", from_args, alias->args);
 }
 
 static PyMemberDef union_members[] = {