No, quit game is already there:
(SetMenu 513 109 ',[/game]')
(SetMenu 514 109 'restore[/game]')
(SetMenu 516 109 'restart[/game]')
(SetMenu 517 109 'quit[/game]')
(SetMenu 769 109 'pause[/game]')
(SetMenu 770 109 'inventory')
The top one is bad; it has to be save game. Besides, quit has the group number 0x1d3 (467 decimal). It is not in the problematic range (save is 0xf0, which is in that range).