AI Tweak bugfixes

code/modules/ai/aI_holder_subtypes/slime_xenobio_ai.dm

@@ -167,7 +167,7 @@
 			return 1 // Melee (eat) the target if dead/dying, don't shoot it.
 	return ..()
 
-/datum/ai_holder/simple_mob/xenobio_slime/can_attack(atom/movable/AM)
+/datum/ai_holder/simple_mob/xenobio_slime/can_attack(atom/movable/AM, var/vision_required = TRUE)
 	. = ..()
 	if(.) // Do some additional checks because we have Special Code(tm).
 		if(ishuman(AM))

code/modules/ai/ai_holder.dm

@@ -224,6 +224,10 @@
 /datum/ai_holder/proc/handle_stance_strategical()
 	ai_log("++++++++++ Slow Process Beginning ++++++++++", AI_LOG_TRACE)
 	ai_log("handle_stance_strategical() : Called.", AI_LOG_TRACE)
+	
+	//We got left around for some reason. Goodbye cruel world.
+	if(!holder)
+		qdel(src)
 
 	ai_log("handle_stance_strategical() : LTT=[lose_target_time]", AI_LOG_TRACE)
 	if(lose_target_time && (lose_target_time + lose_target_timeout < world.time)) // We were tracking an enemy but they are gone.

code/modules/ai/ai_holder_targeting.dm

@@ -115,7 +115,7 @@
 			sorted_targets += A
 	return sorted_targets
 
-/datum/ai_holder/proc/can_attack(atom/movable/the_target, vision_required = TRUE)
+/datum/ai_holder/proc/can_attack(atom/movable/the_target, var/vision_required = TRUE)
 	if(!can_see_target(the_target) && vision_required)
 		return FALSE