Instead use a simple vector.

Change-Id: I50652468cf06ba681d5caccb74a52b32c6c507a0
Reviewed-on: https://gerrit.libreoffice.org/47910Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Meeks <michael.meeks@collabora.com>
(cherry picked from commit 1a156644)