smbd: Fix bug 10593
Bug 10593 is a panic that happens if we get an oplock break reply via
dbwrap_watch for which we can't find the SMB request anymore. This
error condition can legally happen when a client cancels the create
request before the oplock break response comes in. This patch drops the
dbwrap_watch_send request waiting for the oplock break when the request
is cancelled. Yet another talloc hierarchy problem, but if done right,
talloc hierarchies can make rundown of state easy :-)
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>