# if there's already an rt_user, use it.
my @row = $dbh->selectrow_array( "SELECT usename FROM pg_user WHERE usename = '$db_user'" );
unless ( $row[0] ) {
# if there's already an rt_user, use it.
my @row = $dbh->selectrow_array( "SELECT usename FROM pg_user WHERE usename = '$db_user'" );
unless ( $row[0] ) {