with samba 4.2 code valgrind reports

==14299== Invalid read of size 8
==14299==    at 0x545773F: exit_server_common (server_exit.c:221)
==14299==    by 0x54578FF: smbd_exit_server_cleanly (server_exit.c:263)
==14299==    by 0x7896D17: exit_server_cleanly (smbd_shim.c:131)
==14299==    by 0x541029D: smbd_server_connection_read_handler (process.c:2522)
==14299==    by 0x54103C1: smbd_server_connection_handler (process.c:2556)
==14299==    by 0x6FE5469: run_events_poll (events.c:257)
==14299==    by 0x6FE56F5: s3_event_loop_once (events.c:326)
==14299==    by 0x5CA5925: _tevent_loop_once (tevent.c:530)
==14299==    by 0x5CA5B6F: tevent_common_loop_wait (tevent.c:634)
==14299==    by 0x5CA5C3A: _tevent_loop_wait (tevent.c:653)
==14299==    by 0x54148D6: smbd_process (process.c:3992)
==14299==    by 0x111044: smbd_accept_connection (server.c:629)
==14299==  Address 0x141c4ba8 is 104 bytes inside a block of size 504 free'd
==14299==    at 0x4C28ADC: free (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==14299==    by 0x87C9782: _talloc_free (talloc.c:1057)
==14299==    by 0x545773A: exit_server_common (server_exit.c:223)
==14299==    by 0x54578FF: smbd_exit_server_cleanly (server_exit.c:263)
==14299==    by 0x7896D17: exit_server_cleanly (smbd_shim.c:131)
==14299==    by 0x541029D: smbd_server_connection_read_handler (process.c:2522)
==14299==    by 0x54103C1: smbd_server_connection_handler (process.c:2556)
==14299==    by 0x6FE5469: run_events_poll (events.c:257)
==14299==    by 0x6FE56F5: s3_event_loop_once (events.c:326)
==14299==    by 0x5CA5925: _tevent_loop_once (tevent.c:530)
==14299==    by 0x5CA5B6F: tevent_common_loop_wait (tevent.c:634)
==14299==    by 0x5CA5C3A: _tevent_loop_wait (tevent.c:653)
==14299==