Always allow buoys under bridges

src/tunnelbridge_cmd.cpp

@@ -435,6 +435,10 @@ CommandCost CmdBuildBridge(TileIndex end_tile, DoCommandFlag flags, uint32 p1, u
 						break;
 					}
 
+					case STATION_BUOY:
+						/* Buoys are always allowed */
+						break;
+
 					default:
 						if (!_settings_game.construction.allow_stations_under_bridges) {
 							CommandCost ret = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
@@ -542,6 +546,10 @@ CommandCost CmdBuildBridge(TileIndex end_tile, DoCommandFlag flags, uint32 p1, u
 							break;
 						}
 
+						case STATION_BUOY:
+							/* Buoys are always allowed */
+							break;
+
 						default:
 							if (!_settings_game.construction.allow_stations_under_bridges) goto not_valid_below;
 							break;

src/waypoint_cmd.cpp

@@ -298,7 +298,6 @@ CommandCost CmdBuildRailWaypoint(TileIndex start_tile, DoCommandFlag flags, uint
 CommandCost CmdBuildBuoy(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32 p2, const char *text)
 {
 	if (tile == 0 || !HasTileWaterGround(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);
-	if (IsBridgeAbove(tile) && !_settings_game.construction.allow_stations_under_bridges) return_cmd_error(STR_ERROR_MUST_DEMOLISH_BRIDGE_FIRST);
 
 	if (!IsTileFlat(tile)) return_cmd_error(STR_ERROR_SITE_UNSUITABLE);