[clang] [clang][Parser] Allow private type aliases in out-of-line member function return types (PR #169272)

[Paulo Rafael Feodrippe via cfe-commits]

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@@ -61,8 +61,26 @@ bool Parser::isCXXDeclarationStatement(
           // token is also an identifier and assume a declaration.
           // We cannot check if the scopes match because the declarations could
           // involve namespaces and friend declarations.
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pfeodrippe wrote:

Let me know if this comment above should be modified \o

https://github.com/llvm/llvm-project/pull/169272