From afa680089f7387c60ccf0158c537649de8650c75 Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Wed, 26 Feb 2025 12:05:50 +0200
Subject: [PATCH] [3.13] gh-130163: Fix a leak in _pickle.c after backporting

---
 Modules/_pickle.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Modules/_pickle.c b/Modules/_pickle.c
index edb2c116585880..1ef380d1cd7933 100644
--- a/Modules/_pickle.c
+++ b/Modules/_pickle.c
@@ -1938,9 +1938,11 @@ whichmodule(PyObject *global, PyObject *dotted_path)
         i = 0;
         while (PyDict_Next(modules, &i, &module_name, &module)) {
             if (_checkmodule(module_name, module, global, dotted_path) == 0) {
+                Py_DECREF(modules);
                 return Py_NewRef(module_name);
             }
             if (PyErr_Occurred()) {
+                Py_DECREF(modules);
                 return NULL;
             }
         }
@@ -1948,6 +1950,7 @@ whichmodule(PyObject *global, PyObject *dotted_path)
     else {
         PyObject *iterator = PyObject_GetIter(modules);
         if (iterator == NULL) {
+            Py_DECREF(modules);
             return NULL;
         }
         while ((module_name = PyIter_Next(iterator))) {
@@ -1955,22 +1958,26 @@ whichmodule(PyObject *global, PyObject *dotted_path)
             if (module == NULL) {
                 Py_DECREF(module_name);
                 Py_DECREF(iterator);
+                Py_DECREF(modules);
                 return NULL;
             }
             if (_checkmodule(module_name, module, global, dotted_path) == 0) {
                 Py_DECREF(module);
                 Py_DECREF(iterator);
+                Py_DECREF(modules);
                 return module_name;
             }
             Py_DECREF(module);
             Py_DECREF(module_name);
             if (PyErr_Occurred()) {
                 Py_DECREF(iterator);
+                Py_DECREF(modules);
                 return NULL;
             }
         }
         Py_DECREF(iterator);
     }
+    Py_DECREF(modules);
 
     /* If no module is found, use __main__. */
     return &_Py_ID(__main__);