py/modsys: Use MP_ROM_INT for int values in an mp_rom_map_elem_t.

py/modsys.c

@@ -168,7 +168,7 @@ STATIC const mp_rom_map_elem_t mp_module_sys_globals_table[] = {
     // to not try to compare sys.maxsize to some literal number (as this
     // number might not fit in available int size), but instead count number
     // of "one" bits in sys.maxsize.
-    { MP_ROM_QSTR(MP_QSTR_maxsize), MP_OBJ_NEW_SMALL_INT(MP_SMALL_INT_MAX) },
+    { MP_ROM_QSTR(MP_QSTR_maxsize), MP_ROM_INT(MP_SMALL_INT_MAX) },
     #else
     { MP_ROM_QSTR(MP_QSTR_maxsize), MP_ROM_PTR(&mp_maxsize_obj) },
     #endif