修复编译警告

macos/Runner/AppDelegate.swift

@@ -34,7 +34,7 @@ class AppDelegate: FlutterAppDelegate {
     // 在这里可以执行清理操作
     // 例如：保存状态、关闭连接等
     print("应用程序即将终止")
-    
+
     // 通知 Flutter 端应用即将终止
     if let controller = NSApp.windows.first?.contentViewController as? FlutterViewController {
       let channel = FlutterMethodChannel(name: "kaer_vpn/terminate", binaryMessenger: controller.engine.binaryMessenger)
@@ -42,6 +42,11 @@ class AppDelegate: FlutterAppDelegate {
     }
   }
 
+  // 支持安全的状态恢复
+  override func applicationSupportsSecureRestorableState(_ app: NSApplication) -> Bool {
+    return true
+  }
+
   // // window manager restore from dock: https://leanflutter.dev/blog/click-dock-icon-to-restore-after-closing-the-window
   // override func applicationShouldHandleReopen(_ sender: NSApplication, hasVisibleWindows flag: Bool) -> Bool {
   //     if !flag {