[0.15.14] Crash when throwing poison capsules

[Avallach]

Hi, I was laying some rail and went to clear some trees with a poison capsule just to the east of where the save loads and the game crashed. Reproduced 2 more times before filing this bug. I've uploaded the save and log. This wasn't happening in earlier versions, can't remember last time I cleared trees but was only a couple days ago.

[kovarex]

Fixed for 0.15.15