Merge in DNS/adguard-home from 2238-fix-static-analisys-warnings to master Squashed commit of the following: commit 721ca6fa1cbfdfe9d414e6ed52fec4a64653fb52 Author: Eugene Burkov <e.burkov@adguard.com> Date: Fri Oct 30 15:48:10 2020 +0300 * all: fix all staticcheck SA warnings Closes #2238.