Destroy tweaks.

Ports Destroy() proc tweaks from Paradise and /tg/, sourced from https://github.com/ParadiseSS13/Paradise/pull/2091.
Adds returns in Destroy()s, to prepare for future return values.

code/modules/power/singularity/particle_accelerator/particle_control.dm

@@ -30,7 +30,9 @@
 /obj/machinery/particle_accelerator/control_box/Destroy()
 	if(active)
 		toggle_power()
-	..()
+	qdel(wires)
+	wires = null
+	return ..()
 
 /obj/machinery/particle_accelerator/control_box/attack_hand(mob/user as mob)
 	if(construction_state >= 3)