gh-144490: Fix C++ compatibility in pycore_cell.h (GH-144482)

diff --git a/Include/internal/pycore_cell.h b/Include/internal/pycore_cell.h
index cef01e80514f4b151b4535060ae5eeda3b12c1b5..d0d45a2343654fa93fc764168c7a82cc981baaeb 100644 (file)
--- a/Include/internal/pycore_cell.h
+++ b/Include/internal/pycore_cell.h
@@ -53,7 +53,7 @@ _PyCell_GetStackRef(PyCellObject *cell)
 {
     PyObject *value;
 #ifdef Py_GIL_DISABLED
-    value = _Py_atomic_load_ptr(&cell->ob_ref);
+    value = _PyObject_CAST(_Py_atomic_load_ptr(&cell->ob_ref));
     if (value == NULL) {
         return PyStackRef_NULL;
     }