More and more Destroy() cleanups all across the board - Return qdel hints.

code/modules/mob/freelook/ai/eye.dm

@@ -59,7 +59,7 @@
 
 /mob/living/silicon/ai/Destroy()
 	destroy_eyeobj()
-	..()
+	return ..()
 
 /atom/proc/move_camera_by_click()
 	if(istype(usr, /mob/living/silicon/ai))

code/modules/mob/freelook/ai/update_triggers.dm

@@ -59,7 +59,7 @@
 /obj/machinery/camera/Destroy()
 	clear_all_networks()
 	cameranet.cameras -= src
-	..()
+	return ..()
 
 // Mobs
 /mob/living/silicon/ai/rejuvenate()

code/modules/mob/freelook/eye.dm

@@ -38,7 +38,11 @@ mob/observer/eye/Destroy()
 		qdel(ghostimage)
 		ghostimage = null
 		updateallghostimages()
-	..()
+	if(owner)
+		if(owner.eyeobj == src)
+			owner.eyeobj = null
+		owner = null
+	. = ..()
 
 /mob/observer/eye/Move(n, direct)
 	if(owner == src)

code/modules/mob/freelook/mask/update_triggers.dm

@@ -25,7 +25,7 @@
 
 /mob/living/Destroy()
 	cultnet.updateVisibility(src, 0)
-	..()
+	return ..()
 
 /mob/living/rejuvenate()
 	var/was_dead = stat == DEAD

code/modules/mob/freelook/update_triggers.dm

@@ -15,7 +15,7 @@
 
 /turf/simulated/Destroy()
 	updateVisibility(src)
-	..()
+	return ..()
 
 /turf/simulated/New()
 	..()
@@ -26,7 +26,7 @@
 
 /obj/structure/Destroy()
 	updateVisibility(src)
-	..()
+	return ..()
 
 /obj/structure/New()
 	..()

code/modules/mob/freelook/visualnet.dm

@@ -14,7 +14,7 @@
 
 /datum/visualnet/Destroy()
 	visual_nets -= src
-	..()
+	return ..()
 
 // Checks if a chunk has been Generated in x, y, z.
 /datum/visualnet/proc/chunkGenerated(x, y, z)

code/modules/mob/holder.dm

@@ -27,7 +27,7 @@ var/list/holder_mob_icon_cache = list()
 
 /obj/item/weapon/holder/Destroy()
 	processing_objects.Remove(src)
-	..()
+	return ..()
 
 /obj/item/weapon/holder/process()
 	update_state()

code/modules/mob/living/silicon/ai/ai.dm

@@ -215,20 +215,15 @@ var/list/ai_verbs_hidden = list( // For why this exists, refer to https://xkcd.c
 /mob/living/silicon/ai/Destroy()
 	ai_list -= src
 
-	qdel(eyeobj)
-	eyeobj = null
-
-	qdel(psupply)
-	psupply = null
-
-	qdel(aiMulti)
-	aiMulti = null
-
-	qdel(aiRadio)
-	aiRadio = null
-
-	qdel(aiCamera)
-	aiCamera = null
+	qdel_null(announcement)
+	qdel_null(eyeobj)
+	qdel_null(psupply)
+	qdel_null(aiPDA)
+	qdel_null(aiCommunicator)
+	qdel_null(aiMulti)
+	qdel_null(aiRadio)
+	qdel_null(aiCamera)
+	hack = null
 
 	return ..()
 

code/modules/mob/living/silicon/silicon.dm

@@ -41,7 +41,7 @@
 	silicon_mob_list -= src
 	for(var/datum/alarm_handler/AH in alarm_manager.all_handlers)
 		AH.unregister_alarm(src)
-	..()
+	return ..()
 
 /mob/living/silicon/proc/init_id()
 	if(idcard)

code/modules/mob/living/simple_animal/simple_animal.dm

@@ -195,7 +195,7 @@
 	friends.Cut() //This one is not
 	walk_list.Cut()
 	languages.Cut()
-	..()
+	return ..()
 
 //Client attached
 /mob/living/simple_animal/Login()

code/modules/mob/mob_grab.dm

@@ -393,9 +393,6 @@
 /obj/item/weapon/grab/proc/size_difference(mob/A, mob/B)
 	return mob_size_difference(A.mob_size, B.mob_size)
 
-/obj/item/weapon/grab
-	var/destroying = 0
-
 /obj/item/weapon/grab/Destroy()
 	animate(affecting, pixel_x = 0, pixel_y = 0, 4, 1, LINEAR_EASING)
 	affecting.layer = 4
@@ -408,5 +405,4 @@
 		assailant = null
 	qdel(hud)
 	hud = null
-	destroying = 1 // stops us calling qdel(src) on dropped()
-	..()
+	return ..()

code/modules/mob/modifiers.dm

@@ -73,7 +73,7 @@
 
 /mob/living/Destroy()
 	remove_all_modifiers(TRUE)
-	..()
+	return ..()
 
 // Called by Life().
 /mob/living/proc/handle_modifiers()