message: NULL out connection handle after shutdown
diff: @@ -1316,7 +1316,10 @@ void LiveCapture::connectionThreadEntry()
  }
  if(m_Connection)
  + {
  m_Connection->Shutdown();
  + m_Connection = NULL;
  + }
  GUIInvoke::call(this, [this]() {
  ui->connectionStatus->setText(tr("Closed"));
  