Update App.h

Author: uNetworkingAB

src/App.h

@@ -650,7 +650,7 @@ struct TemplatedAppBase {
 
 namespace uWS {
     template <bool SSL>
-    using TemplatedApp = uWS::TemplatedAppBase<SSL, TemplatedApp>;
+    struct TemplatedApp : TemplatedAppBase<SSL, TemplatedApp<SSL>> {};
 
     typedef uWS::TemplatedApp<false> App;
     typedef uWS::TemplatedApp<true> SSLApp;