Introduced in commit 1c4025ba.
Was using UNO reference counting on a member allocated as part
of another object.

Change-Id: Ic86b2aa30359dc202c8bc2f1a0de476167a1e561
Reviewed-on: https://gerrit.libreoffice.org/16889Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Meeks <michael.meeks@collabora.com>
Tested-by: Michael Meeks <michael.meeks@collabora.com>