Issue #10255: Fix reference leak in Py_InitializeEx(). Patch by Neil

Schemenauer.

Misc/NEWS

@@ -10,6 +10,9 @@ What's New in Python 3.2 Beta 1?
 Core and Builtins
 -----------------
 
+- Issue #10255: Fix reference leak in Py_InitializeEx().  Patch by Neil
+  Schemenauer.
+
 - Issue #4925: Add filename to error message when executable can't be found in
   subprocess.
 

Python/pythonrun.c

@@ -893,8 +893,10 @@ initstdio(void)
 
     /* Set builtins.open */
     if (PyObject_SetAttrString(bimod, "open", wrapper) == -1) {
+        Py_DECREF(wrapper);
         goto error;
     }
+    Py_DECREF(wrapper);
 
     encoding = Py_GETENV("PYTHONIOENCODING");
     errors = NULL;