Merge pull request #5604 from Mechoid/Fix_My_Idiocy

Keys now actually exist again.

code/modules/vehicles/cargo_train.dm

@@ -43,7 +43,7 @@
 /obj/vehicle/train/engine/New()
 	..()
 	cell = new /obj/item/weapon/cell/high(src)
-	key = new(key_type)
+	key = new key_type(src)
 	var/image/I = new(icon = 'icons/obj/vehicles.dmi', icon_state = "cargo_engine_overlay", layer = src.layer + 0.2) //over mobs
 	overlays += I
 	turn_off()	//so engine verbs are correctly set

code/modules/vehicles/quad.dm

@@ -27,11 +27,11 @@
 
 /obj/vehicle/train/engine/quadbike/New()
 	cell = new /obj/item/weapon/cell/high(src)
-	key = new(key_type)
+	key = new key_type(src)
 	turn_off()
 
 /obj/vehicle/train/engine/quadbike/built/New()
-	key = new(key_type)
+	key = new key_type(src)
 	turn_off()
 
 /obj/vehicle/train/engine/quadbike/random/New()