restore to stock option

[kunoichidee]

Hello

I see that there's the option to send the products back to stock in some statuses.
But those are not the statuses I need that option in.

I only need them when an order has been canceled (without payment, just canceled) or when the items are returned from the customer.

I tryed to adjust some code, but as I actually don't know much of PHP I messed up.
Well it didn't work anyway and I restored it to the normal code.

But I bet someone is able to give a code adjustment to get that option on an order page.

So to summerise;

need the option to send products back to stock after the status of the order is changed to canceled.
After that I can just delete the order.

I hope someone can help!

Thanks