checksum errors on removed devices during zfs scrub

[Abraham Spam]

I reported to openzfs here: https://github.com/openzfs/zfs/issues/14815

They notified me of the fix here: https://github.com/openzfs/zfs/pull/11930

I guess you just need to pull it into your codebase.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-modules-5.8.0-48-generic 5.8.0-48.54~20.04.1
ProcVersionSignature: Ubuntu 5.8.0-48.54~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-48-generic x86_64
NonfreeKernelModules: openafs zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
CasperMD5CheckResult: skip
Date: Tue May 2 06:38:28 2023
Dependencies:

InstallationDate: Installed on 2021-04-01 (760 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1)
ProcEnviron:
 TERM=dumb
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-hwe-5.8
UpgradeStatus: No upgrade log present (probably fresh install)