Log Message:
-----------
Use correct PG_GETARG macro in pg_convert
Modified Files:
--------------
pgsql/src/backend/utils/mb:
mbutils.c (r1.64 -> r1.65)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/mbutils.c?r1=1.64&r2=1.65)