message: [libterminal] Screen: replace nested for-loop with single for_each
diff: @@ -726,10 +726,14 @@ void Screen::render(Renderer const& _render, size_t _scrollOffset) const
  {
  if (!_scrollOffset)
  {
  - for (cursor_pos_t row = 1; row <= size_.rows; ++row)
  - for (cursor_pos_t col = 1; col <= size_.columns; ++col)
  + for_each(
  + times(1, size_.rows) * times(1, size_.columns),
  + [&](auto pos) {
  + auto const [row, col] = pos;
  _render(row, col, at(row, col));
  }
  + );
  + }
  else
  {
  _scrollOffset = min(_scrollOffset, state_->savedLines.size());
  