[clang] [Clang] Fix assert when transforming a pack indexing type. (PR #82234)

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git-clang-format --diff 3496927edcd0685807351ba88a7e2cfb006e1c0d 55eb380c43740d3ce6843f2ea5b4055b38104124 -- clang/lib/Sema/TreeTransform.h clang/test/SemaCXX/cxx2c-pack-indexing.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Sema/TreeTransform.h b/clang/lib/Sema/TreeTransform.h
index 964ddeefc5..7389a48fe5 100644
--- a/clang/lib/Sema/TreeTransform.h
+++ b/clang/lib/Sema/TreeTransform.h
@@ -6561,8 +6561,10 @@ TreeTransform<Derived>::TransformPackIndexingType(TypeLocBuilder &TLB,
       return QualType();
     if (!ShouldExpand) {
       Sema::ArgumentPackSubstitutionIndexRAII SubstIndex(getSema(), -1);
-      // FIXME: should we keep TypeLoc for individual expansions in PackIndexingTypeLoc?
-      TypeSourceInfo* TI = SemaRef.getASTContext().getTrivialTypeSourceInfo(T, TL.getBeginLoc());
+      // FIXME: should we keep TypeLoc for individual expansions in
+      // PackIndexingTypeLoc?
+      TypeSourceInfo *TI =
+          SemaRef.getASTContext().getTrivialTypeSourceInfo(T, TL.getBeginLoc());
       QualType Pack = getDerived().TransformType(TLB, TI->getTypeLoc());
       if (Pack.isNull())
         return QualType();

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https://github.com/llvm/llvm-project/pull/82234