tdf#89665: i18npool: speed up TextSearch::searchBackward()
There does not appear to be a good reason why searchBackward()
needs to call transliterate() on the entire passed string, so don't do that,
as in the previous commit for the other direction.
Change-Id: Iadfca806da89bf8825e5a3df7fcad64ea08d7f9c
(cherry picked from commit
666fb8b7bc210be6d785515bc7660e5a5d19b82e)
Reviewed-on: https://gerrit.libreoffice.org/14827
Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Eike Rathke <erack@redhat.com>