Index: wp-includes/meta.php
===================================================================
--- wp-includes/meta.php	(revision 22403)
+++ wp-includes/meta.php	(working copy)
@@ -274,7 +274,7 @@
 	$check = apply_filters( "get_{$meta_type}_metadata", null, $object_id, $meta_key, $single );
 	if ( null !== $check ) {
 		if ( $single && is_array( $check ) )
-			return $check[0];
+			return @$check[0];
 		else
 			return $check;
 	}