Merge pull request #8841 from Techjar/remove-result-of

Replace usage of std::result_of with std::invoke_result

Source/Core/DolphinQt/QtUtils/RunOnObject.h

@@ -26,7 +26,7 @@ class QObject;
 template <typename F>
 auto RunOnObject(QObject* object, F&& functor)
 {
-  using OptionalResultT = std::optional<std::result_of_t<F()>>;
+  using OptionalResultT = std::optional<std::invoke_result_t<F>>;
 
   // If we queue up a functor on the current thread, it won't run until we return to the event loop,
   // which means waiting for it to finish will never complete. Instead, run it immediately.