try make more like before

src/endpoint.rs

@@ -43,7 +43,7 @@ pub trait EndpointHandler<M>: Send + Sync
 where
 	M: Message,
 {
-	async fn handle(self: &Arc<Self>, m: &M, from: NodeID) -> <M as Message>::Response;
+	async fn handle(self: &Arc<Self>, m: &M, from: NodeID) -> M::Response;
 }
 
 #[async_trait]