and readability-redundant-string-init

Change-Id: I7b25659ace9e1d5be042ec5e179f01191693334e
Reviewed-on: https://gerrit.libreoffice.org/38225Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>