修复V8.cs中缺少isConnected字段的错误

Windows/CS/Framework4.0/Toprie/Toprie/V8.cs

@@ -130,6 +130,7 @@ namespace JoyD.Windows.CS.Toprie
         // 私有字段
         private string deviceIp;
         private Socket socket;
+        private bool isConnected = false;
         private static bool isSdkInitialized = false;
         private static Dictionary<string, V8> deviceInstances = new Dictionary<string, V8>();