fix entities clones

src/voxels/Chunks.cpp

@@ -743,15 +743,14 @@ void Chunks::save(Chunk* chunk) {
             )
         );
         auto entities = level->entities->getAllInside(aabb);
-        dynamic::Map_sptr root = nullptr;
+        auto root = dynamic::create_map();
+        root->put("data", level->entities->serialize(entities));
         if (!entities.empty()) {
-            root = dynamic::create_map();
-            root->put("data", level->entities->serialize(entities));
             level->entities->despawn(std::move(entities));
             chunk->flags.entities = true;
         }
         worldFiles->getRegions().put(
-            chunk, root ? json::to_binary(root, true) : std::vector<ubyte>()
+            chunk, json::to_binary(root, true)
         );
     }
 }