QHeaderView::restoreState() corrupts view when restoring state with less number of columns

Passing data, generated by a call to QHeaderView::saveState() with smaller number of columns to QHeaderView::restoreState() corrupts view. 

I did not check the MWE with 5.8, but users at https://github.com/qbittorrent/qBittorrent/issues/6784 reports that this works fine with 5.8.0.