message: Clear performance counter viewer when capture is closed
diff: @@ -265,6 +265,10 @@ void PerformanceCounterViewer::OnCaptureClosed()
  {
  ui->captureCounters->setEnabled(false);
  ui->saveCSV->setEnabled(false);
  +
  + ui->counterResults->clearContents();
  + ui->counterResults->setRowCount(0);
  + ui->counterResults->setColumnCount(1);
  }
  void PerformanceCounterViewer::OnCaptureLoaded()
  