Not having structured data elements caused a NullReferenceException

[dwilches]

This code was generating a NullReferenceException because the message doesn't have structured data elements:

using System;
using SyslogNet.Client;
using SyslogNet.Client.Serialization;
using SyslogNet.Client.Transport;

namespace ConsoleApplication
{
    internal class Program
    {
        public static void Main(string[] args)
        {
            var tcpSender = new SyslogTcpSender("192.168.12.23", 1000);

            var msg = new SyslogMessage(Severity.Error, "MyApp", "My message");
            var serializer = new SyslogRfc5424MessageSerializer();
            tcpSender.Send(msg, serializer);
        }
    }
}