message: revert updateTitleBar changes
diff: @@ -541,20 +541,17 @@ void MainWindow::waitOnOSPRayFrame()
  void MainWindow::updateTitleBar()
  {
  - // if (windowTitle.str().empty() == 0) {
  + std::stringstream windowTitle;
  windowTitle << "OSPRay Studio: " << std::setprecision(3) << latestFPS
  << " fps";
  - // }
  if (latestFPS < 2.f) {
  float progress = frame->frameProgress();
  windowTitle << " | ";
  int barWidth = 20;
  std::string progBar;
  progBar.resize(barWidth + 2);
  -
  auto start = progBar.begin() + 1;
  auto end = start + progress * barWidth;
  -
  std::fill(start, end, '=');
  std::fill(end, progBar.end(), '_');
  *end = '>';
  