This avoids problems with the initial default context getting destroyed.

Change-Id: If465dfcd185a3336036b98cb2a205e0502d3f80b
Reviewed-on: https://gerrit.libreoffice.org/20796Reviewed-by: Michael Meeks <michael.meeks@collabora.com>
Tested-by: Michael Meeks <michael.meeks@collabora.com>