gh-117139: Fix an incorrect borrow in bytecodes.c (#122318)

`_PyDict_SetItem_Take2` steals both the key (i.e., `sub`) and the value.

Author: colesbury

Python/bytecodes.c

@@ -862,13 +862,14 @@ dummy_func(
             PyStackRef_CLOSE(list_st);
         }
 
-        inst(STORE_SUBSCR_DICT, (unused/1, value, dict_st, sub_st -- )) {
-            PyObject *sub = PyStackRef_AsPyObjectBorrow(sub_st);
+        inst(STORE_SUBSCR_DICT, (unused/1, value, dict_st, sub -- )) {
             PyObject *dict = PyStackRef_AsPyObjectBorrow(dict_st);
 
             DEOPT_IF(!PyDict_CheckExact(dict));
             STAT_INC(STORE_SUBSCR, hit);
-            int err = _PyDict_SetItem_Take2((PyDictObject *)dict, sub, PyStackRef_AsPyObjectSteal(value));
+            int err = _PyDict_SetItem_Take2((PyDictObject *)dict,
+                                            PyStackRef_AsPyObjectSteal(sub),
+                                            PyStackRef_AsPyObjectSteal(value));
             PyStackRef_CLOSE(dict_st);
             ERROR_IF(err, error);
         }