Comment 3 for bug 1081983

Please contact me privately for a corefile.

(gdb) bt
#0 0x00007f96cc203267 in __GI_raise (sig=sig@entry=6)
    at ../sysdeps/unix/sysv/linux/raise.c:55
#1 0x00007f96cc204eca in __GI_abort () at abort.c:89
#2 0x00007f96cc246c53 in __libc_message (do_abort=do_abort@entry=1,
    fmt=fmt@entry=0x7f96cc35f1a8 "*** Error in `%s': %s: 0x%s ***\n")
    at ../sysdeps/posix/libc_fatal.c:175
#3 0x00007f96cc24ec69 in malloc_printerr (ptr=<optimized out>,
    str=0x7f96cc35f2b8 "double free or corruption (out)", action=1)
    at malloc.c:4965
#4 _int_free (av=<optimized out>, p=<optimized out>, have_lock=0)
    at malloc.c:3834
#5 0x00007f96cc25289c in __GI___libc_free (mem=<optimized out>)
    at malloc.c:2950
#6 0x00007f96ccc47f6a in ?? ()
   from /usr/lib/x86_64-linux-gnu/libtokyocabinet.so.9
#7 0x00007f96ccc480e5 in tchdbclose ()
   from /usr/lib/x86_64-linux-gnu/libtokyocabinet.so.9
#8 0x00007f96ccc4f7b1 in ?? ()
   from /usr/lib/x86_64-linux-gnu/libtokyocabinet.so.9
#9 0x00007f96ccc4f9e3 in tcbdbclose ()
   from /usr/lib/x86_64-linux-gnu/libtokyocabinet.so.9
#10 0x0000000000497c66 in mutt_hcache_close (h=0x274e730) at ../hcache.c:921
#11 0x00000000004a3565 in imap_hcache_close (idata=idata@entry=0x2299f80)
---Type <return> to continue, or q <return> to quit---
    at ../../imap/util.c:112
#12 0x00000000004a117f in imap_read_headers (idata=idata@entry=0x2299f80,
    msgbegin=<optimized out>, msgbegin@entry=0, msgend=msgend@entry=7065)
    at ../../imap/message.c:383
#13 0x000000000049fa8e in imap_open_mailbox (ctx=0x2298060)
    at ../../imap/imap.c:756
#14 0x0000000000445a3e in mx_open_mailbox (
    path=path@entry=0x7ffefe198f20 "imaps://imap.gmail.com/INBOX", flags=0,
    pctx=pctx@entry=0x0) at ../mx.c:681
#15 0x00000000004087d5 in main (argc=1, argv=<optimized out>) at ../main.c:1023