Seg fault when approaching LMOE shelter with npcs

### Describe the bug

Seg fault when approaching LMOE shelter with npcs.

### Attach save file

[Fiskdale-trimmed.tar.gz](https://github.com/CleverRaven/Cataclysm-DDA/files/11710359/Fiskdale-trimmed.tar.gz)

### Steps to reproduce

get out of the vehicle and move to the right towards the lmoe shelter seen on map, some time before you reach it the game crashes.

### Expected behavior

no crash.

### Screenshots

_No response_

### Versions and configuration

- OS: Windows
- OS Version: 10.0.19044.2965 (21H2)
- Game Version: ec7537a [64-bit]
- Graphics Version: Tiles
- Game Language: System language []
- Mods loaded: [
Dark Days Ahead [dda],
Disable NPC Needs [no_npc_food],
Portal Storms Ignore NPCs [personal_portal_storms],
No Fungal Growth [no_fungal_growth],
Magiclysm [magiclysm],
No Hope [no_hope],
No Rail Stations [No_Rail_Stations],
Bionic Slots [cbm_slots],
Xedra Evolved [xedra_evolved],
Arcana and Magic Items [Arcana],
Arcana/Magiclysm Patchmod [Arcana_Magiclysm_Patch]
]

### Additional context

[crash.log](https://github.com/CleverRaven/Cataclysm-DDA/files/11710360/crash.log)
[debug.log](https://github.com/CleverRaven/Cataclysm-DDA/files/11710361/debug.log)

Start by loading Fiskdale-trimmed.tar.gz on Windows with the listed mods and reproducing the crash while moving toward the LMOE shelter. Review crash.log and debug.log for the failing path; done means the same approach no longer causes a segmentation fault.

Written by the indexing model from the issue text.