[clang] [clang-tools-extra] [Clang][C++29] Template pack indexing (PR #218738)

[Corentin Jabot via cfe-commits]

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@@ -9316,7 +9322,7 @@ void Sema::CheckConceptRedefinition(ConceptDecl *NewDecl,
 }
 
 bool Sema::CheckConceptUseInDefinition(NamedDecl *Concept, SourceLocation Loc) {
-  if (auto *CE = llvm::dyn_cast<ConceptDecl>(Concept);
+  if (auto *CE = llvm::dyn_cast_if_present<ConceptDecl>(Concept);
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cor3ntin wrote:

No, left over from a bogus refactor that i later reverted

https://github.com/llvm/llvm-project/pull/218738