nbd/client: fix nbd_send_request to return int
Fix nbd_send_request to return int, as it returns a return value of nbd_write (which is int), and the only user of nbd_send_request's return value (nbd_co_send_request) consider it as int too. Signed-off-by:Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20170804151440.320927-5-vsementsov@virtuozzo.com> Signed-off-by:
Eric Blake <eblake@redhat.com>
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