[libc++] Mark LWG3541 as "Complete". NFC.

Differential Revision: https://reviews.llvm.org/D117956

libcxx/docs/Status/Cxx2bIssues.csv

@@ -85,7 +85,7 @@
 `3536 <https://wg21.link/LWG3536>`__,"Should ``chrono::from_stream()`` assign zero to duration for failure?","June 2021","","","|chrono|"
 `3539 <https://wg21.link/LWG3539>`__,"``format_to`` must not copy models of ``output_iterator<const charT&>``","June 2021","","","|format|"
 `3540 <https://wg21.link/LWG3540>`__,"§[format.arg] There should be no const in ``basic_format_arg(const T* p)``","June 2021","","","|format|"
-`3541 <https://wg21.link/LWG3541>`__,"``indirectly_readable_traits`` should be SFINAE-friendly for all types","June 2021","","","|ranges|"
+`3541 <https://wg21.link/LWG3541>`__,"``indirectly_readable_traits`` should be SFINAE-friendly for all types","June 2021","|Complete|","14.0","|ranges|"
 `3542 <https://wg21.link/LWG3542>`__,"``basic_format_arg`` mishandles ``basic_string_view`` with custom traits","June 2021","|Complete|","14.0","|format|"
 `3543 <https://wg21.link/LWG3543>`__,"Definition of when ``counted_iterators`` refer to the same sequence isn't quite right","June 2021","","","|ranges|"
 `3544 <https://wg21.link/LWG3544>`__,"``format-arg-store::args`` is unintentionally not exposition-only","June 2021","","","|format|"
@@ -138,4 +138,4 @@
 `3595 <https://wg21.link/LWG3595>`__,"Exposition-only classes proxy and postfix-proxy for ``common_iterator`` should be fully ``constexpr``","October 2021","","","|ranges|"
 "","","","",""
 `3645 <https://wg21.link/LWG3645>`__,"``resize_and_overwrite`` is overspecified to call its callback with lvalues", "Not voted in","|Complete|","14.0",""
-"","","","",""
+"","","","",""

libcxx/include/__iterator/readable_traits.h

@@ -57,14 +57,14 @@ template<__has_member_element_type _Tp>
 struct indirectly_readable_traits<_Tp>
   : __cond_value_type<typename _Tp::element_type> {};
 
-// Pre-emptively applies LWG3541
 template<__has_member_value_type _Tp>
-requires __has_member_element_type<_Tp>
+  requires __has_member_element_type<_Tp>
 struct indirectly_readable_traits<_Tp> {};
+
 template<__has_member_value_type _Tp>
-requires __has_member_element_type<_Tp> &&
-         same_as<remove_cv_t<typename _Tp::element_type>,
-                 remove_cv_t<typename _Tp::value_type>>
+  requires __has_member_element_type<_Tp> &&
+           same_as<remove_cv_t<typename _Tp::element_type>,
+                   remove_cv_t<typename _Tp::value_type>>
 struct indirectly_readable_traits<_Tp>
   : __cond_value_type<typename _Tp::value_type> {};