(svn r19489) -Codechange: Introduce a had_success variable in SendAllVehiclesToDepot().

src/vehicle_cmd.cpp

@@ -586,20 +586,23 @@ CommandCost SendAllVehiclesToDepot(VehicleType type, DoCommandFlag flags, bool s
 	GenerateVehicleSortList(&list, type, owner, id, vlw_flag);
 
 	/* Send all the vehicles to a depot */
+	bool had_success = false;
 	for (uint i = 0; i < list.Length(); i++) {
 		const Vehicle *v = list[i];
 		CommandCost ret = DoCommand(v->tile, v->index, (service ? 1 : 0) | DEPOT_DONT_CANCEL, flags, GetCmdSendToDepot(type));
 
-		/* Return 0 if DC_EXEC is not set this is a valid goto depot command)
-		 * In this case we know that at least one vehicle can be sent to a depot
-		 * and we will issue the command. We can now safely quit the loop, knowing
-		 * it will succeed at least once. With DC_EXEC we really need to send them to the depot */
-		if (ret.Succeeded() && !(flags & DC_EXEC)) {
-			return CommandCost();
+		if (ret.Succeeded()) {
+			had_success = true;
+
+			/* Return 0 if DC_EXEC is not set this is a valid goto depot command)
+			 * In this case we know that at least one vehicle can be sent to a depot
+			 * and we will issue the command. We can now safely quit the loop, knowing
+			 * it will succeed at least once. With DC_EXEC we really need to send them to the depot */
+			if (!(flags & DC_EXEC)) break;
 		}
 	}
 
-	return (flags & DC_EXEC) ? CommandCost() : CMD_ERROR;
+	return had_success ? CommandCost() : CMD_ERROR;
 }
 
 /** Give a custom name to your vehicle