quick check with linters

src/world/LevelEvents.cpp

@@ -9,7 +9,7 @@ void LevelEvents::listen(lvl_event_type type, chunk_event_func func) {
 }
 
 void LevelEvents::trigger(lvl_event_type type, Chunk* chunk) {
-	auto& callbacks = chunk_callbacks[type];
+	const auto& callbacks = chunk_callbacks[type];
 	for (chunk_event_func func : callbacks) {
 		func(type, chunk);
 	}