Format empty_in_place_t_does_not_clobber

Author: smallp-o-p

libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/empty_in_place_t_does_not_clobber.pass.cpp

@@ -6,7 +6,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-// UNSUPPORTED: c++03, c++11, c++14
+// REQUIRES: std-at-least-c++17
 // <optional>
 
 // constexpr optional(in_place_t);
@@ -15,9 +15,9 @@
 // in_place_t constructor with no arguments when the Clang is trying to check
 // copy constructor.
 
+#include <cassert>
 #include <optional>
 #include <type_traits>
-#include <cassert>
 
 #include "test_macros.h"
 #include "archetypes.h"
@@ -32,7 +32,7 @@ struct Wrapped {
 };
 
 int main(int, char**) {
-  static_assert(std::is_default_constructible<Wrapped::Inner>::value, "");
+  static_assert(std::is_default_constructible<Wrapped::Inner>::value);
   Wrapped w;
   w.inner.emplace();
   assert(w.inner.has_value());