## About The Pull Request
Some kind of refactor to how AI behaviours work kind of messed this one
up, all of its return values that ended the proc and stopped the suicide
timer were relying on a return value... from a proc called in a timer
that could never possibly get sent as the return value for the relevant
proc.
I fixed it to just call `finish_behaviour` instead.
## Changelog
🆑
fix: AI-controlled ventcrawling mobs (botanical spiderlings and legioned
monkeys) can once more do so without killing themselves shortly
afterwards.
/🆑