fix: service_config warning ignored (#1529)

src/service/local.rs

@@ -25,12 +25,7 @@ use shadowsocks_service::shadowsocks::relay::socks5::Address;
 use shadowsocks_service::{
     acl::AccessControl,
     config::{
-        read_variable_field_value,
-        Config,
-        ConfigType,
-        LocalConfig,
-        LocalInstanceConfig,
-        ProtocolType,
+        read_variable_field_value, Config, ConfigType, LocalConfig, LocalInstanceConfig, ProtocolType,
         ServerInstanceConfig,
     },
     local::{loadbalancing::PingBalancer, Server},
@@ -45,8 +40,7 @@ use shadowsocks_service::{
 use crate::logging;
 use crate::{
     config::{Config as ServiceConfig, RuntimeMode},
-    monitor,
-    vparser,
+    monitor, vparser,
 };
 
 #[cfg(feature = "local-dns")]
@@ -1001,6 +995,9 @@ pub fn create(matches: &ArgMatches) -> Result<(Runtime, impl Future<Output = Exi
             }
         }
 
+        #[cfg(not(feature = "local-online-config"))]
+        let _ = service_config;
+
         // Fetch servers from remote for the first time
         #[cfg(feature = "local-online-config")]
         if let Some(ref online_config) = service_config.online_config {