remove_from_queue() and qdel signals

code/datums/components/xeno/ai_behavior_overrides/base_override_behavior.dm

@@ -36,6 +36,9 @@ GLOBAL_LIST_EMPTY(all_ai_behavior_overrides)
 		game_master.images -= behavior_image
 
 	QDEL_NULL(behavior_image)
+
+	for(var/assigned_xeno in currently_assigned)
+		UnregisterSignal(assigned_xeno, COMSIG_PARENT_QDELETING)
 	currently_assigned = null
 
 	. = ..()
@@ -54,6 +57,14 @@ GLOBAL_LIST_EMPTY(all_ai_behavior_overrides)
 /datum/component/ai_behavior_override/proc/process_override_behavior(mob/living/carbon/xenomorph/processing_xeno, delta_time)
 	SHOULD_NOT_SLEEP(TRUE)
 
+	RegisterSignal(processing_xeno, COMSIG_PARENT_QDELETING, PROC_REF(remove_from_queue), TRUE)
 	currently_assigned |= processing_xeno
 
 	return TRUE
+
+/datum/component/ai_behavior_override/proc/remove_from_queue(mob/removed_xeno)
+	SIGNAL_HANDLER
+	if(currently_assigned)
+		currently_assigned -= removed_xeno
+
+	UnregisterSignal(removed_xeno, COMSIG_PARENT_QDELETING)

code/modules/mob/living/carbon/xenomorph/Xenomorph.dm

@@ -725,10 +725,6 @@
 	if(hardcore)
 		attack_log?.Cut() // Completely clear out attack_log to limit mem usage if we fail to delete
 
-	for(var/datum/component/ai_behavior_override/override in GLOB.all_ai_behavior_overrides)
-		if(override.currently_assigned)
-			override.currently_assigned -= src
-
 	. = ..()
 
 	// Everything below fits the "we have to clear by principle it but i dont wanna break stuff" bill

code/modules/mob/living/carbon/xenomorph/ai/xeno_ai.dm

@@ -235,8 +235,7 @@
 		var/validity = cycled_override.check_behavior_validity(src, distance)
 
 		if(!validity || distance >= shortest_distance)
-			if(cycled_override.currently_assigned)
-				cycled_override.currently_assigned -= src
+			cycled_override.remove_from_queue(src)
 			continue
 
 		shortest_distance = distance