Added var/small to mobs, which currently only handles if they can open airlocks. This replaces the use of ismouse().

code/game/machinery/doors/airlock.dm

@@ -910,7 +910,7 @@ About the new airlock wires panel:
 /obj/machinery/door/airlock/Topic(href, href_list, var/nowindow = 0)
 	if(!nowindow)
 		..()
-	if(usr.stat || usr.restrained()|| ismouse(usr))
+	if(usr.stat || usr.restrained()|| usr.small)
 		return
 	add_fingerprint(usr)
 	if(href_list["close"])

code/game/machinery/doors/door.dm

@@ -47,7 +47,7 @@
 		var/mob/M = AM
 		if(world.time - M.last_bumped <= 10) return	//Can bump-open one airlock per second. This is to prevent shock spam.
 		M.last_bumped = world.time
-		if(!M.restrained() && !ismouse(M))
+		if(!M.restrained() && !M.small)
 			bumpopen(M)
 		return