And simplify the latter, to always use "CDATA" type (as the former did).
"CDATA" was used in all cases but one, where an empty string was used.
Change-Id: I1b3bfae40e29628e4094d9a6e58a69a66865874c
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/145526
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
