Fixed incorrect stream usage in NetworkedBehaviour (#295)

The code previously was not doing what the comment implied - it was sending the current stream, not the shortened stream containing only user data. This effectively meant that the else block was redundant and adding additional overhead.

Author: GarethPikPok

MLAPI/Messaging/ReflectionMethod.cs

@@ -103,11 +103,11 @@ internal object Invoke(NetworkedBehaviour target, ulong senderClientId, Stream s
 
                     if (useDelegate)
                     {
-                        return InvokeDelegate(target, senderClientId, stream);
+                        return InvokeDelegate(target, senderClientId, userStream);
                     }
                     else
                     {
-                        return InvokeReflected(target, stream);
+                        return InvokeReflected(target, userStream);
                     }
                 }
             }