WooCommerce: Deny customer checkout if pending order

WooCommerce: Deny customer checkout if pending order

add_action('woocommerce_before_checkout_form', 'loc_deny_checkout_user_pending_orders');
function loc_deny_checkout_user_pending_orders( $posted ) {
    global $woocommerce;
    $customer = wp_get_current_user();
    if (!empty($customer)) {
        $customer_orders = get_posts(
            array(
                'numberposts' => -1,
                'meta_key'    => '_customer_user',
                'meta_value'  => $customer->ID,
                'post_type'   => 'shop_order',
                'post_status' => 'wc-pending'
            )
        );
        if ( count($customer_orders) > 0 ) {
            wc_add_notice('Hi!<br>We really love the fact that you\'ve come back to our store - it means the world to us.<br>With that said, we cannot (unfortunately) process this order until you have paid your outstanding balance.<br>For more information on how to pay, please go to your account and "Orders".', 'error');
        }
    }
}