[Dovecot] new crash in dovecot-auth test51

[Dan Sully]

* Dan Sully <daniel at electricrain.com> shaped the electrons to say...

>If I remove the vpopmail auth method, it starts working fine with 
>thunderbird.
>
>Obviously, I want to use vpopmail though - this is with vpopmail 5.4.3

I think this is a crash with vpopmail enabled.

#0  auth_cache_clear (cache=0x0) at auth-cache.c:108
108                     auth_cache_node_destroy(cache, cache->tail);
(gdb) bt
#0  auth_cache_clear (cache=0x0) at auth-cache.c:108
#1  0x0804fac2 in auth_cache_free (cache=0x0) at auth-cache.c:100
#2  0x08056de3 in passdb_cache_deinit () at passdb-cache.c:142
#3  0x08056a14 in passdb_deinit () at passdb.c:191
#4  0x080525fb in main (argc=1, argv=0x0) at main.c:273

I don't have any auth-cache directives enabled in my config.

-D
-- 
<Dondi5> I must keep track of all this cheese