From 29cbcbd73bbfd8c953c0b213fb33682c289934ff Mon Sep 17 00:00:00 2001
From: Justin Applegate <70449145+Legoclones@users.noreply.github.com>
Date: Tue, 19 Nov 2024 11:00:35 -0500
Subject: [PATCH] gh-126991: Fix reference leak in loading pickle's opcode
 BUILD (GH-126990)

If PyObject_SetItem() fails in the `load_build()` function of _pickle.c, no DECREF for the `dict` variable.
---
 Modules/_pickle.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Modules/_pickle.c b/Modules/_pickle.c
index 5837cd41a40..2696f380461 100644
--- a/Modules/_pickle.c
+++ b/Modules/_pickle.c
@@ -6730,6 +6730,7 @@ load_build(PickleState *st, UnpicklerObject *self)
             }
             if (PyObject_SetItem(dict, d_key, d_value) < 0) {
                 Py_DECREF(d_key);
+                Py_DECREF(dict);
                 goto error;
             }
             Py_DECREF(d_key);