src/server/formatter.rs: rename format_result to format_data

To avoid confusions with Rust Result type.

src/server/rest.rs

@@ -240,7 +240,7 @@ pub fn handle_sync_api_request<Env: RpcEnvironment>(
         .and_then(move |params| {
             let mut delay = false;
             let resp = match (info.handler.as_ref().unwrap())(params, info, &mut rpcenv) {
-                Ok(data) => (formatter.format_result)(data, &rpcenv),
+                Ok(data) => (formatter.format_data)(data, &rpcenv),
                 Err(err) => {
                     if let Some(httperr) = err.downcast_ref::<HttpError>() {
                         if httperr.code == StatusCode::UNAUTHORIZED { delay = true; }