Fixed: login page being returned instead of unauthorized response

src/NzbDrone.Api/Authentication/EnableAuthInNancy.cs

@@ -77,7 +77,7 @@ namespace NzbDrone.Api.Authentication
             if (context.Request.IsApiRequest())
             {
                 if ((context.Response.StatusCode == HttpStatusCode.SeeOther &&
-                     context.Response.Headers["Location"].StartsWith("/login", StringComparison.InvariantCultureIgnoreCase)) ||
+                     context.Response.Headers["Location"].StartsWith($"{_configFileProvider.UrlBase}/login", StringComparison.InvariantCultureIgnoreCase)) ||
                     context.Response.StatusCode == HttpStatusCode.Unauthorized)
                 {
                     context.Response = new { Error = "Unauthorized" }.AsResponse(HttpStatusCode.Unauthorized);