fix simple-server

examples/simple-server.rs

@@ -16,6 +16,7 @@
 //! consensus network with two nodes and connects a query service to each node. It runs each query
 //! server on local host. The program continues until it is manually killed.
 
+use async_lock::RwLock;
 use clap::Parser;
 use futures::future::{join_all, try_join_all};
 use hotshot::{
@@ -240,7 +241,7 @@ async fn init_consensus(
                     priv_key,
                     node_id as u64,
                     config,
-                    membership,
+                    Arc::new(RwLock::new(membership)),
                     network,
                     HotShotInitializer::from_genesis::<MockVersions>(TestInstanceState::default())
                         .await