[libcxx-commits] [libcxx] [libc++][expected] Applied `[[nodiscard]]` (PR #170245)

[A. Jiang via libcxx-commits]

================
@@ -1890,7 +1890,7 @@ class expected<_Tp, _Err> : private __expected_void_base<_Err> {
   _LIBCPP_HIDE_FROM_ABI friend constexpr bool operator==(const expected& __x, const unexpected<_E2>& __y)
 #  if _LIBCPP_STD_VER >= 26
     requires requires {
-      { __x.error() == __y.error() } -> __core_convertible_to<bool>;
+      { __x.error() == __y.error() }->__core_convertible_to<bool>;
----------------
frederick-vs-ja wrote:

```suggestion
      { __x.error() == __y.error() } -> __core_convertible_to<bool>;
```

https://github.com/llvm/llvm-project/pull/170245