embeddable-dll-service: csharp: ensure double \0 termination

Signed-off-by: Simon Rozman <[email protected]>

Author: rozmansi

embeddable-dll-service/csharp/TunnelDll/Service.cs

@@ -45,7 +45,7 @@ public static void Add(string configFile, bool ephemeral)
                     Win32.CloseServiceHandle(service);
                     Remove(configFile, true);
                 }
-                service = Win32.CreateService(scm, shortName, longName, Win32.ServiceAccessRights.AllAccess, Win32.ServiceType.Win32OwnProcess, Win32.ServiceStartType.Demand, Win32.ServiceError.Normal, pathAndArgs, null, IntPtr.Zero, "Nsi\0TcpIp", null, null);
+                service = Win32.CreateService(scm, shortName, longName, Win32.ServiceAccessRights.AllAccess, Win32.ServiceType.Win32OwnProcess, Win32.ServiceStartType.Demand, Win32.ServiceError.Normal, pathAndArgs, null, IntPtr.Zero, "Nsi\0TcpIp\0", null, null);
                 if (service == IntPtr.Zero)
                     throw new Win32Exception(Marshal.GetLastWin32Error());
                 try
@@ -87,10 +87,7 @@ public static void Remove(string configFile, bool waitForStop)
             {
                 var service = Win32.OpenService(scm, shortName, Win32.ServiceAccessRights.AllAccess);
                 if (service == IntPtr.Zero)
-                {
-                    Win32.CloseServiceHandle(service);
                     return;
-                }
                 try
                 {
                     var serviceStatus = new Win32.ServiceStatus();