[Modify] Polish it

websocket-sharp/Net/EndPointListener.cs

@@ -301,22 +301,20 @@ namespace WebSocketSharp.Net
 
       try {
         conn = new HttpConnection (socket, listener);
+      }
+      catch (Exception) {
+        // TODO: Logging.
+
+        socket.Close ();
+
+        return;
+      }
 
       lock (listener._unregisteredSync)
         listener._unregistered.Add (conn);
 
       conn.BeginReadRequest ();
     }
-      catch {
-        if (conn != null) {
-          conn.Close (true);
-
-          return;
-        }
-
-        socket.Close ();
-      }
-    }
 
     private static bool removeSpecial (
       List<HttpListenerPrefix> prefixes, HttpListenerPrefix prefix