dbris-m: fall back to via_last if destination is unavailable

if ( $opt{station} ) {

	my $max_line = max map { length( $_->line ) } $status->results;

	my $max_dest

	  = max map { length( $_->destination // q{} ) } $status->results;

	  = max map { length( $_->destination // $_->via_last // q{} ) }

	  $status->results;

	my $max_delay = max map { length( $_->delay // q{} ) } $status->results;

	my $max_platform

	  = max map { length( $_->rt_platform // $_->platform // q{} ) }