which results in much simpler code overall, there is no need to go via
an OUStringBuffer all the time

Change-Id: I69eba92c93f471fa9a45f97c29c56dcf3cd1ebf8
Reviewed-on: https://gerrit.libreoffice.org/33773Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Noel Grandin <noel.grandin@collabora.co.uk>