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.");

src/app_vr.cpp

@@ -35,9 +35,6 @@ void App::vr_stop()
 
 void App::vr_draw_ui()
 {
-    if (auto* main = layout[main_id])
-        main->update(width, height, zoom);
-
     uirtt.bindFramebuffer();
     uirtt.clear();
     glViewport(0, 0, uirtt.getWidth(), uirtt.getHeight());