Add widget to the Primary Menu (Wordpress & Genesis Framework)

functions.php

// Add widget to the Primary Menu (Social Icons)
genesis_register_sidebar( array(
    'id'          => 'nav-social-menu',
    'name'        => __( 'Nav Social Menu', 'text-domain' ),
    'description' => __( 'Primary menu widget for social icons.', 'text-domain' ),
) );

add_filter( 'genesis_nav_items', 'qr_social_icons', 10, 2 );
add_filter( 'wp_nav_menu_items', 'qr_social_icons', 10, 2 );
function qr_social_icons($menu, $args) {
    $args = (array)$args;
    if ( 'primary' != $args['theme_location'] )
        return $menu;
    ob_start();
    genesis_widget_area('nav-social-menu');
    $social = ob_get_clean();
    return $menu . $social;
}