[Modify] Polish it

websocket-sharp/WebSocket.cs

@@ -1041,7 +1041,6 @@ namespace WebSocketSharp
     private void open ()
     {
       _inMessage = true;
-      try {
       startReceiving ();
       try {
         OnOpen.Emit (this, EventArgs.Empty);
@@ -1050,10 +1049,6 @@ namespace WebSocketSharp
         _logger.Error (ex.ToString ());
         error ("An exception has occurred during the OnOpen event.", ex);
       }
-      }
-      catch (Exception ex) {
-        processException (ex, "An exception has occurred while opening.");
-      }
 
       MessageEventArgs e = null;
       lock (_forMessageEventQueue) {