using missing.

Emby.Dlna/Api/DlnaServerService.cs

@@ -11,6 +11,7 @@ using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Dlna;
 using MediaBrowser.Controller.Net;
 using MediaBrowser.Model.Services;
+using Microsoft.AspNetCore.Http;
 
 namespace Emby.Dlna.Api
 {