macOS: fix building with feature = "rwh_04"

src/changelog/unreleased.md

@@ -82,3 +82,7 @@ changelog entry.
   This feature was incomplete, and the equivalent functionality can be trivially achieved outside
   of `winit` using `objc2-ui-kit` and calling `UIDevice::currentDevice().userInterfaceIdiom()`.
 - On Web, remove unused `platform::web::CustomCursorError::Animation`.
+
+### Fixed
+
+- On MacOS, fix building with `feature = "rwh_04"`.

src/platform_impl/apple/appkit/window_delegate.rs

@@ -1615,7 +1615,7 @@ impl WindowDelegate {
     pub fn raw_window_handle_rwh_04(&self) -> rwh_04::RawWindowHandle {
         let mut window_handle = rwh_04::AppKitHandle::empty();
         window_handle.ns_window = self.window() as *const WinitWindow as *mut _;
-        window_handle.ns_view = Retained::as_ptr(&self.contentView().unwrap()) as *mut _;
+        window_handle.ns_view = Retained::as_ptr(&self.view()) as *mut _;
         rwh_04::RawWindowHandle::AppKit(window_handle)
     }