Eugene Burkov 7528699fc2 cherry-pick: 3987 Fix nil pointer dereference
Merge in DNS/adguard-home from 3987-fix-nil-deref to master

Updates #3987.
Updates #2846.

Squashed commit of the following:

commit d653e09ce88a8b10b2a17fea1563c419895c714c
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Dec 23 20:08:51 2021 +0300

    all: log changes

commit c47a4eeacf76fa7df2d01af166dee9d52528ac58
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Dec 23 19:22:39 2021 +0300

    aghnet: fix windows tests

commit 9c91f14ccfe967ada3c00ddb86d673238e52c12d
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Dec 23 19:09:49 2021 +0300

    aghnet: imp code readability, docs

commit d3df15d1892e4ebfe7f8ea7144e39a0c712fce52
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Dec 23 18:47:28 2021 +0300

    aghnet: fix nil pointer dereference
2021-12-24 22:41:10 +03:00
..
2021-11-23 18:01:48 +03:00
2021-11-17 17:21:10 +03:00
2021-12-24 22:23:22 +03:00
2021-12-24 22:23:22 +03:00
2021-10-22 11:58:18 +03:00