use another class which does not reference Http (fix HL interpreter not supporting Socket for now)

tests/unit/src/unit/issues/Issue5608.hx

@@ -5,7 +5,7 @@ class Issue5608 extends unit.Test {
 
 	function test() {
 		//should not throw
-		fields = Reflect.fields(haxe.remoting.HttpConnection);
+		fields = Reflect.fields(haxe.Serializer);
 		t(true);
 	}
 }