[clang] Minor unused variable error for sanitizer builds (PR #132372)

[CHANDRA GHALE via cfe-commits]

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@@ -11761,7 +11761,7 @@ void OMPClauseReader::VisitOMPReductionClause(OMPReductionClause *C) {
   unsigned NumFlags = Record.readInt();
   SmallVector<bool, 16> Flags;
   Flags.reserve(NumFlags);
-  for (unsigned I : llvm::seq<unsigned>(NumFlags))
+  for ([[maybe_unused]] unsigned I : llvm::seq<unsigned>(NumFlags))
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chandraghale wrote:

it does

https://github.com/llvm/llvm-project/pull/132372