[clang] [clang] CTAD alias: fix transformation for require-clause expr Part2. (PR #93533)

[Matheus Izvekov via cfe-commits]

================
@@ -2840,8 +2841,22 @@ buildAssociatedConstraints(Sema &SemaRef, 
FunctionTemplateDecl *F,
 
   for (unsigned Index = 0; Index < DeduceResults.size(); ++Index) {
     const auto &D = DeduceResults[Index];
-    if (D.isNull())
+    if (D.isNull()) { // non-deduced template parameters of f
+      auto TP = F->getTemplateParameters()->getParam(Index);
----------------
mizvekov wrote:

Small nit:
```suggestion
      NamedDecl *TP = F->getTemplateParameters()->getParam(Index);
```

https://github.com/llvm/llvm-project/pull/93533
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