[llvm-branch-commits] [clang] release/19.x: [clang][headers] Including stddef.h always redefines NULL (#99727) (PR #100191)

[Aaron Ballman via llvm-branch-commits]

https://github.com/AaronBallman approved this pull request.

LGTM, I think the CI failures are unrelated to this patch.

https://github.com/llvm/llvm-project/pull/100191