NetMarshalServer fix disconnect all bug.

src/com/captainalm/lib/calmnet/marshal/NetMarshalServer.java

@@ -367,11 +367,10 @@ public class NetMarshalServer implements Closeable {
     }
 
     private void disconnectAllInternal() throws IOException {
-        synchronized (slocksock) {
+        NetMarshalClient[] clients = getConnectedClients();
         for (NetMarshalClient c : clients)
             if (c.isRunning()) c.close();
     }
-    }
 
     protected NetMarshalClient generateClientSocket(Socket socketIn) {
         return new NetMarshalClient(socketIn, factory, loader, fragmentationOptions);