Correct a bug where we attempt to kill an OpenVPN process even though its pid file does not exist.
Correct a bug where we attempt to kill an OpenVPN process even though its
pid file does not exist.

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