Unlink file only if it exists
Unlink file only if it exists

Ticket #1257

dennypage/pfsense,ch1c4um/pfsense,ptorsten/pfsense,phil-davis/pfsense,jxmx/pfsense,BlackstarGroup/pfsense,BlackstarGroup/pfsense,NOYB/pfsense,NewEraCracker/pfsense,brunostein/pfsense,brunostein/pfsense,phil-davis/pfsense,BlackstarGroup/pfsense,pfsense/pfsense,NOYB/pfsense,dennypage/pfsense,phil-davis/pfsense,NewEraCracker/pfsense,brunostein/pfsense,pfsense/pfsense,ptorsten/pfsense,BlackstarGroup/pfsense,NewEraCracker/pfsense,pfsense/pfsense,ch1c4um/pfsense,dennypage/pfsense,pfsense/pfsense,jxmx/pfsense,jxmx/pfsense,phil-davis/pfsense,dennypage/pfsense,NewEraCracker/pfsense,ptorsten/pfsense,NOYB/pfsense,ch1c4um/pfsense,ch1c4um/pfsense