update .net core startup

1 files changed, 6 insertions, 1 deletions

diff --git a/Emby.Common.Implementations/Net/SocketFactory.cs b/Emby.Common.Implementations/Net/SocketFactory.cs
index 922b0f3cc..f26137683 100644
--- a/Emby.Common.Implementations/Net/SocketFactory.cs
+++ b/Emby.Common.Implementations/Net/SocketFactory.cs
@@ -23,10 +23,15 @@ namespace Emby.Common.Implementations.Net
         /// </summary>
         private IPAddress _LocalIP;
 
-        private ILogger _logger;
+        private readonly ILogger _logger;
 
         public SocketFactory(ILogger logger)
         {
+            if (logger == null)
+            {
+                throw new ArgumentNullException("logger");
+            }
+
             _logger = logger;
             _LocalIP = IPAddress.Any;
         }