fix quest vr threading

src/app.cpp

@@ -405,6 +405,8 @@ void App::init()
     initLayout();
     title_update();
 
+    uirtt.create(width, height, -1, GL_RGBA8, true);
+
     if (!check_license())
     {
         message_box("License", "Could not validate this license, running in demo mode.");