...as the UNO_QUERY_THROW above would already have caused an exception

Change-Id: Ie0453b67716c64ddaddfa6becd498952a497be63
Reviewed-on: https://gerrit.libreoffice.org/48106Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>