Index: wp-includes/comment.php
===================================================================
--- wp-includes/comment.php	(revision 20737)
+++ wp-includes/comment.php	(working copy)
@@ -752,7 +752,7 @@ function get_comment_pages_count( $comments = null, $per_page = null, $threaded
 	if ( null === $comments && null === $per_page && null === $threaded && !empty($wp_query->max_num_comment_pages) )
 		return $wp_query->max_num_comment_pages;
 
-	if ( !$comments || !is_array($comments) )
+	if ( ( !$comments || !is_array($comments) ) && !empty( $wp_query->comments ) )
 		$comments = $wp_query->comments;
 
 	if ( empty($comments) )