[clang] [Clang] [C++26] Expansion Statements (Part 1: AST) (PR #169680)

[Erich Keane via cfe-commits]

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erichkeane wrote:

Can we update this comment too?  It seems sensible that `getLocalVarDecl` document that it looks through expansion statements.

https://github.com/llvm/llvm-project/pull/169680