[MIRROR] some smaller cleanup (#12353)

Co-authored-by: Kashargul <144968721+Kashargul@users.noreply.github.com>

code/modules/mining/ore_redemption_machine/equipment_vendor.dm

@@ -168,6 +168,7 @@
 	if(inserted_id && !powered())
 		visible_message(span_notice("The ID slot indicator light flickers on \the [src] as it spits out a card before powering down."))
 		inserted_id.forceMove(get_turf(src))
+		inserted_id = null
 
 /obj/machinery/mineral/equipment_vendor/update_icon()
 	if(panel_open)
@@ -307,6 +308,7 @@
 /obj/machinery/mineral/equipment_vendor/dismantle()
 	if(inserted_id)
 		inserted_id.forceMove(loc) //Prevents deconstructing the ORM from deleting whatever ID was inside it.
+		inserted_id = null
 	. = ..()
 
 /**