IconDiffBot2 shits itself on some .dmi files with big icons

[Djiq]

From:
https://github.com/yogstation13/Yogstation/runs/19222841503

Stack trace:
`Error handling job

An unexpected error occured during processing, possibly caused by malformed maps, icons, or server catching fire.

The following stack trace may be useful:
Stack trace

IconFile::from_bytes failed for "yogstation/icons/mob/screen_full_big.dmi"

Caused by:
Unexpected end of data before image end.`

File in question:
https://github.com/EdgeLordExe/Yogstation/blob/jungleland/yogstation/icons/mob/screen_full_big.dmi

[PowerfulBacon]

We are getting this on https://github.com/BeeStation/BeeStation-Hornet/pull/9501/checks?check_run_id=19244107934