Use pos TileVirtXY for aircraft crash tile

See: #549

src/aircraft_cmd.cpp

@@ -1425,14 +1425,12 @@ static void CrashAirplane(Aircraft *v)
 	v->Next()->cargo.Truncate();
 	const Station *st = GetTargetAirportIfValid(v);
 	StringID newsitem;
-	TileIndex vt;
+	TileIndex vt = TileVirtXY(v->x_pos, v->y_pos);
 	if (st == nullptr) {
 		newsitem = STR_NEWS_PLANE_CRASH_OUT_OF_FUEL;
-		vt = TileVirtXY(v->x_pos, v->y_pos);
 	} else {
 		SetDParam(1, st->index);
 		newsitem = STR_NEWS_AIRCRAFT_CRASH;
-		vt = v->tile;
 	}
 
 	AI::NewEvent(v->owner, new ScriptEventVehicleCrashed(v->index, vt, st == nullptr ? ScriptEventVehicleCrashed::CRASH_AIRCRAFT_NO_AIRPORT : ScriptEventVehicleCrashed::CRASH_PLANE_LANDING));