the extra argument on the runtimeexception method was only ever passed
an "OUString()"

Change-Id: I0ea19ae9328760918f1267f27ba103432fff0b47
Reviewed-on: https://gerrit.libreoffice.org/37274Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>