From 8158e059e9952f08d19a18d3e9e021cee2393cd2 Mon Sep 17 00:00:00 2001
From: Pablo Galindo Salgado <Pablogsal@gmail.com>
Date: Sat, 24 Jul 2021 15:25:54 +0100
Subject: bpo-44676: Fix reference leaks in union_reduce (GH-27332)

Automerge-Triggered-By: GH:pablogsal
---
 Objects/unionobject.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Objects/unionobject.c b/Objects/unionobject.c
index ad34dca..9804d87 100644
--- a/Objects/unionobject.c
+++ b/Objects/unionobject.c
@@ -371,7 +371,7 @@ 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[] = {
-- 
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