Makes code simpler, and std::span can be constructed from std::vector too. Change-Id: Iae26b53c52148c19d9068a63126a7393d098d654 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/124507 Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk> Reviewed-by: Luboš Luňák <l.lunak@collabora.com> Tested-by: Jenkins