wp-term-link.php

<?php
/**
 * Get term link
 * @param  string $term_slug Term slug
 * @param  string $taxonomy  Taxonomy slug
 * @return string            Term link
 */
function prefix_get_term_link( $term_slug, $taxonomy ) {
    // Check if the term exists
    $term = term_exists( $term_slug, $taxonomy );
    if ( $term !== 0 && $term !== null ) :
        $term_id = (int)$term['term_id'];
        return get_term_link( $term_id, $taxonomy );
    else :
    	__return_null();
    endif;

}