[clang] [clang] Don't omit null pointer checks with -fms-kernel (PR #193800)

[Aaron Ballman via cfe-commits]

https://github.com/AaronBallman commented:

Thank you for working on this! Please be sure to also add a release note to `clang/docs/ReleaseNotes.rst` so users know about the change. Also, please ensure that the PR summary has a description of why the changes are being made (the summary gets used as the commit message).

https://github.com/llvm/llvm-project/pull/193800