cyr_expire suddenly segfaulting

[Simon Matter]

> So everything is 2.4 defaults, which are:
>
> brong at wot:~/src/cyrus-imapd$ grep '_db"' lib/imapoptions
> { "annotation_db", "skiplist", STRINGLIST("berkeley", "berkeley-hash",
> "skiplist")}
> { "duplicate_db", "skiplist", STRINGLIST("berkeley", "berkeley-nosync",
> "berkeley-hash", "berkeley-hash-nosync", "skiplist", "sql")}
> { "mboxkey_db", "skiplist", STRINGLIST("berkeley", "skiplist") }
> { "mboxlist_db", "skiplist", STRINGLIST("flat", "berkeley",
> "berkeley-hash", "skiplist")}
> { "ptscache_db", "skiplist", STRINGLIST("berkeley", "berkeley-hash",
> "skiplist")}
> { "quota_db", "quotalegacy", STRINGLIST("flat", "berkeley",
> "berkeley-hash", "skiplist", "sql", "quotalegacy")}
> { "seenstate_db", "skiplist", STRINGLIST("flat", "berkeley",
> "berkeley-hash", "skiplist")}
> { "subscription_db", "flat", STRINGLIST("flat", "berkeley",
> "berkeley-hash", "skiplist")}
> { "statuscache_db", "skiplist", STRINGLIST("berkeley", "berkeley-nosync",
> "berkeley-hash", "berkeley-hash-nosync", "skiplist") }
> { "tlscache_db", "skiplist", STRINGLIST("berkeley", "berkeley-nosync",
> "berkeley-hash", "berkeley-hash-nosync", "skiplist", "sql")}
> { "userdeny_db", "flat", STRINGLIST("flat", "berkeley", "berkeley-hash",
> "skiplist", "sql")}
>
> So you shouldn't have any berkeley databases at all.  It should be
> perfectly safe to shut down Cyrus, delete the $confdir/db folder, and
> restart Cyrus.

I suggest to make sure first that the ClearOS build really uses those
defaults - because they could change defaults in their builds.

Simon