qt6 support

formats/loader_assimp.cpp

@@ -252,7 +252,7 @@ Scene * loadScene(const QString & filepath) {
 	scene->setName(root->name());
 	foreach (ObjectBase * o, root->children())
 		scene->addObject(o);
-	lights.removeAll(0);
+	lights.removeAll(nullptr);
 	qDeleteAll(lights);
 
 	return scene;