Change 81330b8d6e: Cached path only needs to be cleared if it was found to be invalid.

src/ship_cmd.cpp

@@ -484,9 +484,9 @@ static Track ChooseShipTrack(Ship *v, TileIndex tile, DiagDirection enterdir, Tr
 			}
 
 			/* Cached path is invalid so continue with pathfinder. */
+			v->path.clear();
 		}
 
-		v->path.clear();
 		switch (_settings_game.pf.pathfinder_for_ships) {
 			case VPF_OPF: track = OPFShipChooseTrack(v, tile, enterdir, tracks, path_found); break;
 			case VPF_NPF: track = NPFShipChooseTrack(v, tile, enterdir, tracks, path_found); break;