For some reason, SfxLibrary's own interfaces were used outside of WeakComponentImplHelper; and derived classes didn't use inheritance helper. Change-Id: Ib0b6cf5cfa559fe5eedc4d05247655aca1bfc4b8 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/177607 Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com> Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>