Git commits in Moodle 3.11.4 by Neill Magill

commit 137a1ef570c5df67097f7b6464957263b47d0264
Author: Neill Magill <neill.magill@nottingham.ac.uk>
Date:   Mon, 11 Oct 2021 16:32:00 +0800
Tag:    v3.11.4

MDL-72767 forum: Stop duplicate digests being created


commit 23f8a8b2d55a4e78577364b0916b30dfa51f25c3
Author: Neill Magill <neill.magill@nottingham.ac.uk>
Date:   Fri, 08 Oct 2021 22:02:58 +0800
Tag:    v3.11.4

MDL-72767 forum: Fix PHPDoc


commit 29f8071c3b0d6844a0a4aadccf3cbfea6252006a
Author: Neill Magill <neill.magill@nottingham.ac.uk>
Date:   Fri, 08 Oct 2021 20:39:00 +0800
Tag:    v3.11.4

MDL-72767 forum: Ensure digests are sent