Use correct gobject-sys::GObject type

Author: sdroege

gdk4/src/subclass/content_provider.rs

@@ -374,7 +374,7 @@ unsafe extern "C" fn content_provider_write_mime_type_async<T: ContentProviderIm
     let closure = move |task: gio::LocalTask<bool>, source_object: Option<&glib::Object>| {
         let result: *mut gio::ffi::GAsyncResult =
             task.upcast_ref::<gio::AsyncResult>().to_glib_none().0;
-        let source_object: *mut glib::object::GObject = source_object.to_glib_none().0;
+        let source_object: *mut glib::gobject_ffi::GObject = source_object.to_glib_none().0;
         callback.unwrap()(source_object, result, user_data)
     };