Ticket #4870: category.php.patch

.

@@ -109 +109 @@
                 $children = _get_category_hierarchy();
                 if ( ! empty($children) )
                         $categories = & _get_cat_children($child_of, $categories);
+                elseif ($child_of) {
+                        return array();
+                }
         }
 
         // Update category counts to include children.