Makes burglar alerts activate poddoors.

Adds generic lock/unlock helpers to /door

code/game/area/areas.dm

@@ -166,12 +166,11 @@
 		//Trigger alarm effect
 		RA.set_fire_alarm_effect()
 		//Lockdown airlocks
-		for(var/obj/machinery/door/airlock/DOOR in RA)
+		for(var/obj/machinery/door/DOOR in RA)
 			spawn(0)
 				DOOR.close()
 				if(DOOR.density)
-					DOOR.locked = 1
-					DOOR.update_icon()
+					DOOR.lock()
 		for (var/obj/machinery/camera/C in RA)
 			cameras += C
 

code/game/machinery/doors/airlock.dm

@@ -80,12 +80,18 @@ var/list/airlock_overlays = list()
 		airlock_material = "glass"
 	update_icon()
 
+/obj/machinery/door/airlock/lock()
+	bolt()
+
 /obj/machinery/door/airlock/proc/bolt()
 	if(locked)
 		return
 	locked = 1
 	update_icon()
 
+/obj/machinery/door/airlock/unlock()
+	unbolt()
+
 /obj/machinery/door/airlock/proc/unbolt()
 	if(!locked)
 		return

code/game/machinery/doors/door.dm

@@ -269,4 +269,10 @@
 	icon = 'icons/obj/doors/doormorgue.dmi'
 
 /obj/machinery/door/storage_contents_dump_act(obj/item/weapon/storage/src_object, mob/user)
-	return 0
+	return 0
+
+/obj/machinery/door/proc/lock()
+	return
+
+/obj/machinery/door/proc/unlock()
+	return