Strict standard error on tags block and when editing tags

Strict Standards: Creating default object from empty value in /var/www/stable/master/moodle/blocks/tags/block_tags.php on line 43 

--- a/blocks/tags/block_tags.php

+++ b/blocks/tags/block_tags.php

@@ -40,6 +40,7 @@ class block_tags extends block_base {

         global $CFG, $COURSE, $SITE, $USER, $SCRIPT, $OUTPUT;

         if (empty($CFG->usetags)) {

+            $this->content = new stdClass();

             $this->content->text = '';

             if ($this->page->user_is_editing()) {

                 $this->content->text = get_string('disabledtags', 'block_tags');