smbd: Use share_mode's flags in contend_level2_oplocks

smbd: Use share_mode's flags in contend_level2_oplocks

Here we traverse the oplocks and leases when breaking read leases. We
find out here whether any of those are still left.

As it's the receivers of the messages that downgrade the database
entries, we might do that more than once. Possible future
optimization?

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>