4.5 smbd warning - cleanupdb traverse

[Steve French]

I saw this warning on 4.5 Samba regularly when running some of the
smbtorture create cases:

[2016/10/18 03:46:09.639971,  0]
../source3/smbd/smbd_cleanupd.c:172(smbd_cleanupd_process_exited)

  smbd_cleanupd_process_exited: got 0 cleanup events, expected at least 1


Ideas?
-- 
Thanks,

Steve