instead of old-school header guards Change-Id: I3aac6f970494de721735576c2a640d85fd61b7c2 Reviewed-on: https://gerrit.collaboraoffice.com/c/online/+/3029 Reviewed-by: Miklos Vajna <vmiklos@collabora.com> Tested-by: Jenkins CPCI <releng@collaboraoffice.com> (cherry picked from commit 9f5421d96d63d06f9b2c9478e45185409498b982) Reviewed-on: https://gerrit.libreoffice.org/c/core/+/206321 Tested-by: Jenkins Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>