Ticket #17492: 17492.patch

wp-includes/formatting.php

@@ -1835 +1835 @@
  *
  * @since 1.5.0
  *
- * @param string $text The excerpt. If set to empty an excerpt is generated.
+ * @param string $text Optional. The excerpt. If set to empty, an excerpt is generated.
  * @return string The excerpt.
  */
-function wp_trim_excerpt($text) {
+function wp_trim_excerpt($text = '') {
         $raw_excerpt = $text;
         if ( '' == $text ) {
                 $text = get_the_content('');