...similar to how <https://gerrit.libreoffice.org/#/c/45083/2> "Make not warning
about !! in loplugin:simplifybool consistent" does for loplugin:simplifybool

Change-Id: I23eef400af71c582d380c9bae6546ce06e8a1e18
Reviewed-on: https://gerrit.libreoffice.org/45122Tested-by: Stephan Bergmann <sbergman@redhat.com>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>