fix comma

Author: huixie90

libcxx/include/__ranges/adjacent_view.h

@@ -182,7 +182,7 @@ class adjacent_view<_View, _Np>::__iterator {
 
   template <class _Tp, size_t... _Is>
   static auto __repeat_tuple_helper(index_sequence<_Is...>)
-      -> tuple<decltype(((void)_Is, std::declval<_Tp (*)()>()()))...>;
+      -> tuple<decltype((std::declval<_Tp (*)(size_t)>()(_Is)))...>;
 
 public:
   using iterator_category = input_iterator_tag;