Git commits in Moodle 3.2.1 by Damyon Wiese

commit 2ce5b1d637af2f5623d4be34d7ddf6fff98546c3
Author: Damyon Wiese <damyon@moodle.com>
Date:   Thu, 15 Dec 2016 10:35:10 +0800
Tag:    v3.2.1

MDL-57386 blocklib: wrong variable in is_block_present