add links to userpro profiles

comments.php

<?php 
if ( !function_exists('reactor_comments') ) :
	function reactor_comments( $comment, $args, $depth ) {
		do_action('reactor_comments', $comment, $args, $depth );

    global $userpro;
		$GLOBALS['comment'] = $comment;
		switch ( $comment->comment_type ) :
			case 'pingback' :
			case 'trackback' :
				// Display trackbacks differently than normal comments.
				?>
				<li <?php comment_class(); ?> id="comment-<?php comment_ID(); ?>">
				<p><?php _e('Pingback:', 'crum'); ?> <?php comment_author_link(); ?> <?php edit_comment_link( __('Edit', 'crum'), '<div class="comment-edit-link"><span>', '</span></div>'); ?></p>
				<?php
				break;
			default :
				// Proceed with normal comments.
				global $post;
				?>
				<li <?php comment_class(); ?> id="li-comment-<?php comment_ID(); ?>">
				<?php
				echo get_avatar( $comment, 70 );
				?>
					<article id="comment-<?php comment_ID(); ?>" class="comment-entry comment">
						<header class="comment-meta comment-author">

							<?php 
							$author_id = get_the_author_id();
              
							printf('<cite class="fn">%1$s </cite>',
								$userpro->permalink($author_id)
								// If current post author is also comment author, make it known visually
								//( $comment->user_id === $post->post_author ) ? '<span> ' . __('Post author', 'crum') . '</span>' : ''
							);
							$comment_date = strtotime(get_comment_date('Y-m-d').' ' . get_comment_time('H:i:s'));
							printf('<a href="%1$s"><time pubdate datetime="%2$s">%3$s</time></a>',
								esc_url( get_comment_link( $comment->comment_ID ) ),
								get_comment_time('c'),
								// translators: 1: date, 2: time
								human_time_diff( get_comment_time('U'), current_time('timestamp') ) . ' ago'
							);

							?>
							<div class="reply comment-reply-button">
								<?php comment_reply_link( array_merge( $args, array('reply_text' => __('Reply', 'crum'), 'before' => '', 'after' => '', 'depth' => $depth, 'max_depth' => $args['max_depth'] ) ) ); ?>
							</div><!-- .reply -->

						</header><!-- .comment-meta -->

						<?php if ( '0' == $comment->comment_approved ) : ?>
							<p class="comment-awaiting-moderation"><?php _e('Your comment is awaiting moderation.', 'crum'); ?></p>
						<?php endif; ?>

						<div class="comment-content comment">
							<?php comment_text(); ?>
							<?php edit_comment_link( __('Edit', 'crum'), '<div class="edit-link"><span>', '</span></div>'); ?>
						</div><!-- .comment-content -->

					</article><!-- #comment-## -->
				<?php
				break;
		endswitch; // end comment_type check
	}
endif;