message: Fix incorrect Total Duration time of Timeline Event (lib)
diff: @@ -559,6 +559,7 @@ void GUI::DisplayTimeline(
  timeline_event_view_init(event);
  event_view->Next = event_app->Event;
  event_app->Event = event_view;
  + duration += event_app->Duration;
  }
  }
  event_app = reinterpret_cast<TogglTimelineEventView *>(event_app->Next);
  @@ -578,7 +579,7 @@ void GUI::DisplayTimeline(
  app_event_view->Next = first_event;
  first_event = app_event_view;
  - duration += event_view->Duration;
  + duration += app_event_view->Duration;
  }
  }
  }
  