Fix #11053: Check variable before call implode()
Fix #11053: Check variable before call implode()

dennypage/pfsense,dennypage/pfsense,dennypage/pfsense,pfsense/pfsense,pfsense/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,pfsense/pfsense,NewEraCracker/pfsense,pfsense/pfsense,dennypage/pfsense,NewEraCracker/pfsense