message: fix crash in world-switching
diff: @@ -463,7 +463,11 @@ void MainWindow::tick() {
  clearInput();
  }
  - auto& camera = *gothic.gameCamera();
  + auto pcamera = gothic.gameCamera();
  + if(pcamera==nullptr)
  + return;
  +
  + auto& camera = *pcamera;
  currentFocus = player.findFocus(&currentFocus,camera,w(),h());
  player.setTarget(currentFocus.npc);
  