Ticket #4289: 4289.diff

wp-includes/comment.php

@@ -730 +730 @@
                         // 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 );
                 }
         }
@@ -793 +793 @@
                 $client->query('weblogUpdates.ping', get_option('blogname'), $home);
 }
 
-?>
- No newline at end of file
+?>