Ticket #19882: 19882.diff

wp-includes/post.php

@@ -1462 +1462 @@
  * @return mixed Will be an array if $single is false. Will be value of meta data field if $single
  *  is true.
  */
-function get_post_meta($post_id, $key, $single = false) {
+function get_post_meta($post_id, $key = '', $single = false) {
         return get_metadata('post', $post_id, $key, $single);
 }