autobuild[sn-devel-144]: intermittent test failure detected

[autobuild]

The autobuild test system (on sn-devel-144) has detected an intermittent failing test in 
the current master tree.

The autobuild log of the failure is available here:

   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-04-29-0226/flakey.log

The samba build logs are available here:

   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-04-29-0226/samba.stderr
   http://git.samba.org/autobuild.flakey.sn-devel-144/2017-04-29-0226/samba.stdout
  
The top commit at the time of the failure was:

commit aa43d0d81baa497135a17e843b05336b4a504809
Author: Gary Lockyer <gary at catalyst.net.nz>
Date:   Thu Apr 27 12:39:34 2017 +1200

    source3 smdb: fix null pointer dereference
    
    Fix the null pointer dereference in smbd, introduced in the auth logging
    changes.
    
    Signed-off-by: Gary Lockyer <gary at catalyst.net.nz>
    Reviewed-by: Andrew Bartlett <abartlet at samba.org>
    Reviewed-by: Jeremy Allison <jra at samba.org>
    
    Autobuild-User(master): Jeremy Allison <jra at samba.org>
    Autobuild-Date(master): Fri Apr 28 07:18:54 CEST 2017 on sn-devel-144