message: Fix help / save filename modal dialog conflicts
diff: @@ -1027,6 +1027,8 @@ void MainApp::render()
  {
  render_save_filename();
  ImGui::EndPopup();
  +
  + m_show_help = false;
  }
  if ( m_show_help && !ImGui::IsPopupOpen( "GpuVis Help" ) )
  @@ -4384,7 +4386,7 @@ void MainApp::handle_hotkeys()
  if ( s_actions().get( action_toggle_show_eventlist ) )
  s_opts().setb( OPT_ShowEventList, !s_opts().getb( OPT_ShowEventList ) );
  - if ( !m_show_help && s_actions().get( action_save_screenshot ) )
  + if ( s_actions().get( action_save_screenshot ) )
  {
  ImGuiIO& io = ImGui::GetIO();
  int w = ( int )io.DisplaySize.x;
  