#20462: Fixing UrlHelper resolution from a Timer task

Work Item: 20462

src/Orchard/Mvc/MvcModule.cs

@@ -114,6 +114,10 @@ namespace Orchard.Mvc {
             public override Cache Cache {
                 get { return HttpRuntime.Cache; }
             }
+
+            public override object GetService(Type serviceType) {
+                return null;
+            }
         }
 
         private class HttpResponsePlaceholder : HttpResponseBase {