WPUF post edit link

solution.php

<?php 
function wpuf_get_post_edit_link( $post_id ) {
    if ( !class_exists( 'WP_User_Frontend' ) || !$post_id ) {
        return;
    }

    $edit_page = (int) wpuf_get_option( 'edit_page_id', 'wpuf_frontend_posting' );
    $url        = get_permalink( $edit_page );

    $url = wp_nonce_url( $url . '?pid=' . $post_id, 'wpuf_edit' );

    return $url;
}