Fix #7120: Restore vendor mac address when spoofmac is set to blank
Fix #7120: Restore vendor mac address when spoofmac is set to blank

phil-davis/pfsense,dennypage/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,dennypage/pfsense,NewEraCracker/pfsense,jxmx/pfsense,NewEraCracker/pfsense,brunostein/pfsense,brunostein/pfsense,phil-davis/pfsense,NOYB/pfsense,pfsense/pfsense,NOYB/pfsense,dennypage/pfsense,phil-davis/pfsense,brunostein/pfsense,NOYB/pfsense,ptorsten/pfsense,pfsense/pfsense,pfsense/pfsense,pfsense/pfsense,ptorsten/pfsense,dennypage/pfsense,jxmx/pfsense,jxmx/pfsense,ptorsten/pfsense,phil-davis/pfsense