From a2f73325583bc781d42e6aa7780ad52ddaad8b1d Mon Sep 17 00:00:00 2001
From: markjaquith <markjaquith@1a063a9b-81f0-0310-95a4-ce76da25c4cd>
Date: Wed, 27 Jun 2007 23:28:36 +0000
Subject: [PATCH] Mark pingback as already pinged when the target site says it
 already got the pingback.  props mdawaffe.  fixes #4289

git-svn-id: http://svn.automattic.com/wordpress/trunk@5772 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/comment.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wp-includes/comment.php b/wp-includes/comment.php
index a3cfb5020..4a27fedb3 100644
--- a/wp-includes/comment.php
+++ b/wp-includes/comment.php
@@ -740,7 +740,7 @@ function pingback($content, $post_ID) {
 			// when set to true, this outputs debug messages by itself
 			$client->debug = false;
 
-			if ( $client->query('pingback.ping', $pagelinkedfrom, $pagelinkedto ) )
+			if ( $client->query('pingback.ping', $pagelinkedfrom, $pagelinkedto) || ( isset($client->error->code) && 48 == $client->error->code ) ) // Already registered
 				add_ping( $post_ID, $pagelinkedto );
 		}
 	}