Revert "!TMP faster"

This reverts commit ca602b7.

Author: Conor

src/core/promise.cxx

@@ -30,19 +30,8 @@ struct promise_deleter {
   }
 };
 
-// template <typename T>
-// using unique_promise = std::unique_ptr<T, promise_deleter>;
-
 template <typename T>
-struct unique_promise {
-  T *a;
-
-  constexpr auto operator*() noexcept -> T & { return *a; }
-  constexpr auto operator->() noexcept -> T * { return a; }
-  constexpr operator bool() const noexcept { return a != nullptr; }
-  constexpr auto release() noexcept -> T * { return a; }
-  constexpr auto operator==(std::nullptr_t) const noexcept -> bool { return a == nullptr; }
-};
+using unique_promise = std::unique_ptr<T, promise_deleter>;
 
 /**
  * @brief The return type for libfork's async functions/coroutines.
@@ -74,7 +63,7 @@ constexpr auto final_suspend(frame_type *frame) -> std::coroutine_handle<> {
 
   {
     // Destroy the child frame
-    promise_deleter::operator()(frame);
+    unique_promise<frame_type> _{frame};
   }
 
   if (parent_frame != nullptr) {
@@ -147,7 +136,7 @@ struct promise_type<void, StackPolicy> : StackPolicy, mixin_frame {
 
   frame_type frame;
 
-  constexpr auto get_return_object() -> task<void, StackPolicy> { return {{this}}; }
+  constexpr auto get_return_object() -> task<void, StackPolicy> { return {{this, {}}}; }
 
   constexpr static void return_void() {}
 };