Off by one bug in assigning script buffer and heap wastes memory

[ohrrpgce-bugbot]

[bz#47]

When a script is run, it is assigned script buffer and heap one int ahead of
where it should be.

Additionally, if either the buffer or heap is filled exactly, an overflow is
triggered, even though the script fis completely

From: @rversteegen
Reported version: unknown

[ohrrpgce-bugbot]

Comment author: @rversteegen

Created attachment 9
Patch to fix off by one errors in Runscript

I wasted too much time testing this one :/

Attached file: scrbufleak.txt (text/plain, 1035 bytes)
Description: Patch to fix off by one errors in Runscript

[ohrrpgce-bugbot]

Comment author: @bob-the-hamster

Ooh! Thanks for noticing that. Good catch.
I have applied the patch.
Matking fixed. We can verify after quaternion.