[config] Don't use VORG table if HB_NO_OT_FONT_CFF

Part of https://github.com/harfbuzz/harfbuzz/issues/1652
diff --git a/src/hb-ot-font.cc b/src/hb-ot-font.cc
index af9a9a2..0707a2f 100644
--- a/src/hb-ot-font.cc
+++ b/src/hb-ot-font.cc
@@ -148,12 +148,14 @@
 
   *x = font->get_glyph_h_advance (glyph) / 2;
 
+#ifndef HB_NO_OT_FONT_CFF
   const OT::VORG &VORG = *ot_face->VORG;
   if (VORG.has_data ())
   {
     *y = font->em_scale_y (VORG.get_y_origin (glyph));
     return true;
   }
+#endif
 
   hb_glyph_extents_t extents = {0};
   if (ot_face->glyf->get_extents (glyph, &extents))