gh-142664: fix PyObject_Hash invokation post GH-143217 (GH-143223)

(cherry picked from commit 84fcdbd)

Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>

Author: picnixz

Objects/memoryobject.c

@@ -3078,9 +3078,9 @@ memory_hash(PyObject *_self)
             // Prevent 'self' from being freed when computing the item's hash.
             // See https://github.com/python/cpython/issues/142664.
             self->exports++;
-            int rc = PyObject_Hash(view->obj);
+            Py_hash_t h = PyObject_Hash(view->obj);
             self->exports--;
-            if (rc == -1) {
+            if (h == -1) {
                 /* Keep the original error message */
                 return -1;
             }