[clang] [llvm] [NFC] Address bit-field storage sizes to ensure ideal packing (PR #139825)

[Oliver Hunt via cfe-commits]

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@@ -996,7 +997,8 @@ class Sema;
 
     /// FailureKind - The reason why this candidate is not viable.
     /// Actually an OverloadFailureKind.
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ojhunt wrote:

should I remove this comment now that there's a preferred type annotation?

https://github.com/llvm/llvm-project/pull/139825