Fix HashTable usage in passwd_cache. #6537
Fix HashTable usage in passwd_cache. #6537

Fix a possible use-after-delete bug in passwd_cache::cache_groups().
Remove updateDuplicateKeys option in passwd_cache's HashTables.

htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor,htcondor/htcondor