to speed up operations when iterating over SfxItemSets Change-Id: Ie40327ffaf7faa801ccc12d2b05c546a7fe49802 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/135079 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>