psql: \dg off by one error

Hi all,

I noticed an off by one error in psql's verbose-mode display for \dg
and \du. In verbose mode, \dg and \du will not display the
"Replication" attribute:

test=# \dg rep
            List of roles
 Role name | Attributes  | Member of
-----------+-------------+-----------
 rep       | Replication | {}

test=# \dg+ rep
                  List of roles
 Role name | Attributes | Member of | Description
-----------+------------+-----------+-------------
 rep       |            | {}        |


Attached is a one line patch to fix.

Josh