TTB Sidebar showing 3 posts

TTB_sidebar_showing_posts.php

<?php
/**
 * The sidebar containing the main widget area.
 *
 * @link https://developer.wordpress.org/themes/basics/template-files/#template-partials
 *
 * @package haicu17
 */

if ( ! is_active_sidebar( 'sidebar-1' ) ) {
	return;
}
?>

<aside id="secondary" class="widget-area" role="complementary">
<?php // Query to show latest 3 posts

	// arguments for query
	$args = array(
		'post_type' => 'post',
		'posts_per_page' => 3
	);
	
	// new query for posts
	$my_query = new WP_query ( $args );
	if ( $my_query->have_posts() ) { ?>
		<h2>Recent nieuws</h2>
		<ul class="news-listing">
			<?php while ( $my_query->have_posts() ) : $my_query->the_post(); ?>
				<li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li>
  			<?php	endwhile;
  			rewind_posts(); ?>
  		</ul>
  	<?php } ?>


	<?php dynamic_sidebar( 'sidebar-1' ); ?>
</aside><!-- #secondary -->