get latest download that isn't a release candidate

latest_dl.php

// echo latest download version for buttons 
function get_latest_dl_ver() {
	$args = array(
				'post_type'		=> 'downloads',
				'posts_per_page'	=> '1',
				//'order'		=> 'DESC',
				'orderby'		=> 'meta_value',
				'meta_query'		=> array(
								array(
								'key'	=> 'rc',
								'value'	=> '0',
								'compare'=> '!='
								)
							)
				);
	
	$latest = new WP_Query($args);

	while ( $latest->have_posts() ) : $latest->the_post();

		the_title();
	
	endwhile; wp_reset_postdata();
}