Git commits in Moodle 4.0.3 by Christina Thee Roperto

commit 8c9179174de13c1d89e02ad889d7876c1f05c249
Author: Christina Thee Roperto <christinatheeroperto@catalyst-au.net>
Date:   Mon, 18 Jul 2022 20:46:01 +0800
Tag:    v4.0.3

MDL-72349 filelib: update strip_double_headers function