(svn r20476) -Codechange: simplify a check in aircraft_cmd.cpp by using the existing CanVehicleUseStation

src/aircraft_cmd.cpp

@@ -1529,9 +1529,7 @@ static void AircraftEventHandler_Flying(Aircraft *v, const AirportFTAClass *apc)
 	Station *st = Station::Get(v->targetairport);
 
 	/* runway busy or not allowed to use this airstation, circle */
-	if ((apc->flags & (v->subtype == AIR_HELICOPTER ? AirportFTAClass::HELICOPTERS : AirportFTAClass::AIRPLANES)) &&
-			st->airport.tile != INVALID_TILE &&
-			(st->owner == OWNER_NONE || st->owner == v->owner)) {
+	if (CanVehicleUseStation(v, st) && (st->owner == OWNER_NONE || st->owner == v->owner)) {
 		/* {32,FLYING,NOTHING_block,37}, {32,LANDING,N,33}, {32,HELILANDING,N,41},
 		 * if it is an airplane, look for LANDING, for helicopter HELILANDING
 		 * it is possible to choose from multiple landing runways, so loop until a free one is found */