Allow revoking serial '0' by number. Fixes #9869
Allow revoking serial '0' by number. Fixes #9869

dennypage/pfsense,pfsense/pfsense,NewEraCracker/pfsense,pfsense/pfsense,dennypage/pfsense,phil-davis/pfsense,phil-davis/pfsense,pfsense/pfsense,phil-davis/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,NewEraCracker/pfsense,dennypage/pfsense,NewEraCracker/pfsense,dennypage/pfsense,pfsense/pfsense