Fixed the issue where process does not accept sudo password input stream for the first time

v2rayN/ServiceLib/Handler/CoreAdminHandler.cs

@@ -45,7 +45,6 @@ public class CoreAdminHandler
                 RedirectStandardOutput = true,
                 RedirectStandardError = true,
                 CreateNoWindow = true,
-                StandardInputEncoding = Encoding.UTF8,
                 StandardOutputEncoding = Encoding.UTF8,
                 StandardErrorEncoding = Encoding.UTF8,
             }