[clang] [serialization] No transitive type change (PR #92511)

[Ilya Biryukov via cfe-commits]

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@@ -3262,17 +3262,18 @@ void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
 /// Write the representation of a type to the AST stream.
 void ASTWriter::WriteType(QualType T) {
   TypeIdx &IdxRef = TypeIdxs[T];
-  if (IdxRef.getIndex() == 0) // we haven't seen this type before.
+  if (IdxRef.getValue() == 0) // we haven't seen this type before.
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ilya-biryukov wrote:

SG, let's keep as is

https://github.com/llvm/llvm-project/pull/92511