acl: Fix reloading of configuration if configuration file does not exist at startup.

The named ACL code incorrectly destroyed the config options information if loading
of the configuration file failed at startup. This would result in reloading
also failing even if a valid configuration file was put in place.

ASTERISK-23733 #close
Reported by: Richard Kenner


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/11@429893 f38db490-d61c-443f-a65b-d21fe96a405b