[PATCH] D142123: [clang-tidy] Add check to suggest use of #pragma once

[Carlos Galvez via Phabricator via cfe-commits]

carlosgalvezp added a comment.

Please note, `HeaderFileExtensions` is becoming a global option in this patch to avoid duplication, which will land in the next 2 days.
https://reviews.llvm.org/D141000

Therefore you'll need to update the patch based on that.


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  https://reviews.llvm.org/D142123/new/

https://reviews.llvm.org/D142123