Otherwise we may have destroyed a service that is needed to generate
one of the clipboard formats requested by the system clipboard.

Change-Id: Id05de3ac569e3ed38cd97efc4c48326bc6a8db0b
Reviewed-on: https://gerrit.libreoffice.org/39429Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>