logger nullref fix

diff --git a/Hazel/Udp/UdpConnectionListener.cs b/Hazel/Udp/UdpConnectionListener.cs
index 5b618854fd5a59847aaa456a1847f50b14f81190..e108b099030ce1c92436433f9c3bcd9ac0578956 100644 (file)
--- a/Hazel/Udp/UdpConnectionListener.cs
+++ b/Hazel/Udp/UdpConnectionListener.cs
@@ -112,7 +112,7 @@ namespace Hazel.Udp
                 var result = socket.BeginReceiveFrom(message.Buffer, 0, message.Buffer.Length, SocketFlags.None, ref remoteEP, ReadCallback, message);
                 if (result.CompletedSynchronously)
                 {
-                    this.Logger("Operation completed synchronously");
+                    this.Logger?.Invoke("Operation completed synchronously");
                 }
             }
             catch (SocketException sx)