(svn r18498) -Fix [FS#2616]: cloning of vehicles could create vehicles with invalid cargo sub types for the build year of the vehicle. Fall back to another cargo sub type with the exact same name, otherwise fallback to cargo sub type 0.

src/vehicle_func.h

@@ -42,6 +42,7 @@ byte VehicleRandomBits();
 void ResetVehiclePosHash();
 void ResetVehicleColourMap();
 
+byte GetBestFittingSubType(Vehicle *v_from, Vehicle *v_for);
 CommandCost RefitVehicle(Vehicle *v, bool only_this, CargoID new_cid, byte new_subtype, DoCommandFlag flags);
 
 void ViewportAddVehicles(DrawPixelInfo *dpi);