Index: wp-comments-post.php
===================================================================
--- wp-comments-post.php	(revision 39949)
+++ wp-comments-post.php	(working copy)
@@ -28,7 +28,7 @@
 	if ( ! empty( $data ) ) {
 		wp_die( '<p>' . $comment->get_error_message() . '</p>', __( 'Comment Submission Failure' ), array( 'response' => $data, 'back_link' => true ) );
 	} else {
-		exit;
+		wp_die( '<p>' . $comment->get_error_code() . '</p>', __( 'Comment Submission Failure' ), array( 'back_link' => true ) );
 	}
 }