[ nedit-Bugs-1887838 ] fix possible stack overflow in interpreter

[Bert Wesarg]

>  >Comment By: Scott Tringali (tringali)
>
>  Good stuff here.  I added you as a developer, I hope it's easier to
>  update/commit changes directly than write patches.
Not really. If you ever stumble over quilt, patches is your world ;-)

But first a big thank you for taking me as a developer.

Bert