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

code/game/objects/items/devices/PDA/PDA.dm

@@ -1470,8 +1470,12 @@ var/global/list/obj/item/device/pda/PDAs = list()
 /obj/item/device/pda/Destroy()
 	PDAs -= src
 	if (src.id && prob(90)) //IDs are kept in 90% of the cases
-		src.id.loc = get_turf(src.loc)
-	..()
+		src.id.forceMove(get_turf(src.loc))
+	else
+		qdel_null(src.id)
+	qdel_null(src.cartridge)
+	qdel_null(src.pai)
+	return ..()
 
 /obj/item/device/pda/clown/Crossed(AM as mob|obj) //Clown PDA is slippery.
 	if (istype(AM, /mob/living))

code/game/objects/items/devices/PDA/cart.dm

@@ -78,6 +78,10 @@ var/list/civilian_cartridges = list(
 	var/message2
 	var/list/stored_data = list()
 
+/obj/item/weapon/cartridge/Destroy()
+	qdel_null(radio)
+	return ..()
+
 /obj/item/weapon/cartridge/engineering
 	name = "\improper Power-ON cartridge"
 	icon_state = "cart-e"
@@ -164,10 +168,6 @@ var/list/civilian_cartridges = list(
     radio = new /obj/item/radio/integrated/signal(src)
     ..()
 
-/obj/item/weapon/cartridge/signal/Destroy()
-	qdel(radio)
-	..()
-
 /obj/item/weapon/cartridge/quartermaster
 	name = "\improper Space Parts & Space Vendors cartridge"
 	desc = "Perfect for the Quartermaster on the go!"

code/game/objects/items/devices/communicator/communicator.dm

@@ -803,7 +803,7 @@ var/global/list/obj/item/device/communicator/all_communicators = list()
 	if(exonet)
 		exonet.remove_address()
 		exonet = null
-	..()
+	return ..()
 
 // Proc: update_icon()
 // Parameters: None

code/game/objects/items/devices/radio/intercom.dm

@@ -96,7 +96,7 @@
 
 /obj/item/device/radio/intercom/Destroy()
 	processing_objects -= src
-	..()
+	return ..()
 
 /obj/item/device/radio/intercom/attack_ai(mob/user as mob)
 	src.add_fingerprint(user)