tgstation/-tg-station — pull request #2746 by Ergovisavi (2014-02-12 02:17:18+00:00)
Title: Fixes runtimes generated by the pai mob when it tries to click on things

Evidently the default UnarmedAttack called by the on click code is attack_animal. This just makes the pAI verison return instead, stopping it from generating runtimes due to attack_animal checking for vars the pAI doesn't have.