[libcxx-commits] [libcxx] [libc++] Refactor some forward declarations to avoid unnecessary dependencies (PR #81368)

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git-clang-format --diff 33c6b77d2a18862fb5b16160ef9d600382e93f19 d35a4dbdb1d74e56837a3415d2ba449cce3633cd -- libcxx/include/__fwd/array.h libcxx/include/__fwd/pair.h libcxx/include/__fwd/subrange.h libcxx/include/__fwd/tuple.h libcxx/include/__memory/compressed_pair.h libcxx/include/__ranges/elements_view.h libcxx/include/__ranges/subrange.h libcxx/include/__tuple/pair_like.h libcxx/include/__utility/pair.h libcxx/include/istream libcxx/include/streambuf libcxx/include/tuple
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diff --git a/libcxx/include/__fwd/tuple.h b/libcxx/include/__fwd/tuple.h
index d6e244988c..96ad09f1c6 100644
--- a/libcxx/include/__fwd/tuple.h
+++ b/libcxx/include/__fwd/tuple.h
@@ -30,7 +30,7 @@ struct _LIBCPP_TEMPLATE_VIS tuple_element;
 template <class>
 struct _LIBCPP_TEMPLATE_VIS tuple_size;
 
-#if _LIBCPP_STD_VER >= 20
+#  if _LIBCPP_STD_VER >= 20
 
 template <class _Tp>
 inline constexpr bool __is_tuple_like_v = false;

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https://github.com/llvm/llvm-project/pull/81368