[Modify] Polish it

websocket-sharp/WebSocket.cs

@@ -649,19 +649,20 @@ namespace WebSocketSharp
         }
 
         try {
-          if (acceptHandshake ()) {
+          if (!acceptHandshake ())
+            return false;
+
           _readyState = WebSocketState.Open;
           return true;
         }
-        }
         catch (Exception ex) {
           _logger.Fatal (ex.ToString ());
           fatal ("An exception has occurred while accepting.", ex);
-        }
 
           return false;
         }
       }
+    }
 
     // As server
     private bool acceptHandshake ()