[clang] [WIP] fix gh163837 (PR #165098)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- clang/lib/Sema/SemaTemplateInstantiateDecl.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
index 9c1bbb405..439a5317f 100644
--- a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -7066,7 +7066,7 @@ NamedDecl *Sema::FindInstantiatedDecl(SourceLocation Loc, NamedDecl *D,
             CurrentInstantiationScope
                 ? CurrentInstantiationScope->getInstantiationOfIfExists(D)
                 : nullptr) {
-        return cast<NamedDecl>(Found->dyn_cast<Decl *>());
+      return cast<NamedDecl>(Found->dyn_cast<Decl *>());
     }
     return D;
   }

``````````

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https://github.com/llvm/llvm-project/pull/165098