[Fix] Move it out

Fix for issue #235

websocket-sharp/Net/HttpListener.cs

@@ -415,19 +415,21 @@ namespace WebSocketSharp.Net
 
     private void cleanupConnections ()
     {
+      HttpConnection[] conns = null;
       lock (_connectionsSync) {
         if (_connections.Count == 0)
           return;
 
         // Need to copy this since closing will call the RemoveConnection method.
         var keys = _connections.Keys;
-        var conns = new HttpConnection[keys.Count];
+        conns = new HttpConnection[keys.Count];
         keys.CopyTo (conns, 0);
         _connections.Clear ();
+      }
+
       for (var i = conns.Length - 1; i >= 0; i--)
         conns[i].Close (true);
     }
-    }
 
     private void cleanupContextRegistry ()
     {