valgrind errors in smbd/master

[Jeremy Allison]

Hi all,

Can you take a look at:

https://bugzilla.samba.org/show_bug.cgi?id=13633

I was trying to track down some valgrind errors in
my SMB2 POSIX extensions branch, and discovered I
get the same errors in pristine master (no SMB2
POSIX changes).

I'll also take a look, but the problems on session
shutdown / server termination have been a perennial
pain here :-(.

Jeremy.