From 8f47aa2c0e4afadd9e669cf5223e0d2d0a24a4f5 Mon Sep 17 00:00:00 2001
From: Brandt Bucher <brandtbucher@gmail.com>
Date: Tue, 19 Nov 2019 16:59:32 -0800
Subject: [PATCH] bpo-38823: Fix refleak in marshal init error path (GH-17260)
 (cherry picked from commit 33b671e72450bf4b5a946ce0dde6b7fe21150108)

Co-authored-by: Brandt Bucher <brandtbucher@gmail.com>
---
 Python/marshal.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Python/marshal.c b/Python/marshal.c
index b2daff2c8a3bef..c6a06e8c239764 100644
--- a/Python/marshal.c
+++ b/Python/marshal.c
@@ -1829,6 +1829,9 @@ PyMarshal_Init(void)
     PyObject *mod = PyModule_Create(&marshalmodule);
     if (mod == NULL)
         return NULL;
-    PyModule_AddIntConstant(mod, "version", Py_MARSHAL_VERSION);
+    if (PyModule_AddIntConstant(mod, "version", Py_MARSHAL_VERSION) < 0) {
+        Py_DECREF(mod);
+        return NULL;
+    }
     return mod;
 }