Fix issues with New and Destroy in NTNet

- New() on atoms needs to call parent.
- Destroy() needs to return a qdel hint.
- Only add yourself to processing in Initialize() to make sure globals are instantiated.

code/modules/modular_computers/hardware/_hardware.dm

@@ -47,6 +47,7 @@
 	to_chat(user, "Hardware Integrity Test... (Corruption: [damage]/[max_damage]) [damage > damage_failure ? "FAIL" : damage > damage_malfunction ? "WARN" : "PASS"]")
 
 /obj/item/weapon/computer_hardware/New(var/obj/L)
+	..()
 	w_class = hardware_size
 	if(istype(L, /obj/item/modular_computer))
 		holder2 = L

code/modules/modular_computers/hardware/network_card.dm

@@ -97,4 +97,4 @@ var/global/ntnet_card_uid = 1
 /obj/item/weapon/computer_hardware/network_card/Destroy()
 	if(holder2 && (holder2.network_card == src))
 		holder2.network_card = null
-	..()
+	return ..()