[Ohrrpgce] wip r13877: Fix NPC editor crash on walkabout sets with 4 or fewer frames

[cron at rpg.hamsterrepublic.com]

https://github.com/ohrrpgce/ohrrpgce/commit/fd46b06cd7a6c5ca3fd38f85476d7e18025cce5f
Author: teeemcee <teeemcee at 7d344553-34f0-0310-a9b1-970ce8f1c3a2>
Date:   Thu Apr 10 12:28:12 2025 +0000

    Fix NPC editor crash on walkabout sets with 4 or fewer frames
    

 allmodex.bas | 5 +++--
 mapsubs.bas  | 5 +++--
 whatsnew.txt | 1 +
 3 files changed, 7 insertions(+), 4 deletions(-)