nvme-print: fix counter while looping through uuid_list

nvme-print: fix counter while looping through uuid_list

While iterating through the uuid_list in json_nvme_id_uuid_list()
as part of the 'id-uuid' json output, it always misses out
displaying the first uuid entry here due to wrongly initialized
counter value. Fix it.

And while we are at it, remove the respective comment in
stdout_id_uuid_list() as well where this counter is already
properly initiatlized.

Signed-off-by: Martin George <marting@netapp.com>