[clang] [clang][ASTImporter][StructuralEquivalence] improve StructuralEquivalence on recordType (PR #76226)

[Balázs Kéri via cfe-commits]

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@@ -1491,6 +1492,12 @@ static bool IsRecordContextStructurallyEquivalent(RecordDecl *D1,
         return false;
     }
 
+    if (auto *D1Spec = dyn_cast<ClassTemplateSpecializationDecl>(DC1)) {
+      auto *D2Spec = dyn_cast<ClassTemplateSpecializationDecl>(DC2);
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balazske wrote:

I see now that the old code was better, there is a previous check `DC1->getDeclKind() != DC2->getDeclKind()`, this should ensure that the type is the same.

https://github.com/llvm/llvm-project/pull/76226