Fix a refleak in call_maybe()

Issue #27128. Fix a reference leak if creating the tuple to pass positional
parameters fails.

diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 00995d481d6af027b82bd129ffdf03312d75f9a9..950835c6b7681ba56b644e5944597c6b338bcd2a 100644 (file)
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -1314,8 +1314,10 @@ call_maybe(PyObject *o, char *name, PyObject **nameobj, char *format, ...)
 
     va_end(va);
 
-    if (args == NULL)
+    if (args == NULL) {
+        Py_DECREF(func);
         return NULL;
+    }
 
     assert(PyTuple_Check(args));
     retval = PyObject_Call(func, args, NULL);