(svn r19463) -Codechange: add helper function to determine if an airport has at least one hangar

src/ai/api/ai_order.cpp

@@ -181,7 +181,7 @@ static const Order *ResolveOrder(VehicleID vehicle_id, AIOrder::OrderPosition or
 			if (v->type != VEH_AIRCRAFT) return ::Depot::Get(order->GetDestination())->xy;
 			/* Aircraft's hangars are referenced by StationID, not DepotID */
 			const Station *st = ::Station::Get(order->GetDestination());
-			if (st->airport.GetSpec()->nof_depots == 0) return INVALID_TILE;
+			if (!st->airport.HasHangar()) return INVALID_TILE;
 			return st->GetHangarTile(0);
 		}