Vladimir Sementsov-Ogievskiy a693437037 block/nbd-client: nbd_co_send_request: fix return code
It's incorrect to return success rc >= 0 if we skip qio_channel_writev_all()
call due to s->quit.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20170920124507.18841-4-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2017-09-25 08:21:26 -05:00
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