functions.php

<?php

/**
 * Fix the Post Title Link on Edit Comments
 * @author Bill Erickson
 * @link http://www.billerickson.net/fixing-post-title-link-editing-comments/
 * 
 * @param string $link, the edit post link
 * @param int $post_id, the post ID
 * @param string $context, The link context. If set to 'display' then ampersands are encoded.
 * @return string $link, modified edit post link
 */
function be_fix_post_title_link_on_edit_comments( $link, $post_id, $context ) {

	if( ! is_admin() )
		return $link;
		
	$screen = get_current_screen();
	if( $screen->base == 'edit-comments' )
		$link = get_permalink( $post_id );

	return $link;
}
add_filter( 'get_edit_post_link', 'be_fix_post_title_link_on_edit_comments', 10, 3 );