[config] More trak disabling

Part of https://github.com/harfbuzz/harfbuzz/issues/1652

src/hb-ot-shape.cc

@@ -112,10 +112,12 @@ hb_ot_shape_planner_t::compile (hb_ot_shape_plan_t           &plan,
   hb_tag_t kern_tag = HB_DIRECTION_IS_HORIZONTAL (props.direction) ?
 		      HB_TAG ('k','e','r','n') : HB_TAG ('v','k','r','n');
   plan.kern_mask = plan.map.get_mask (kern_tag);
+#ifndef HB_NO_SHAPE_AAT
   plan.trak_mask = plan.map.get_mask (HB_TAG ('t','r','a','k'));
+  plan.requested_tracking = !!plan.trak_mask;
+#endif
 
   plan.requested_kerning = !!plan.kern_mask;
-  plan.requested_tracking = !!plan.trak_mask;
   bool has_gpos_kern = plan.map.get_feature_index (1, kern_tag) != HB_OT_LAYOUT_NO_FEATURE_INDEX;
   bool disable_gpos = plan.shaper->gpos_tag &&
 		      plan.shaper->gpos_tag != plan.map.chosen_script[1];

src/hb-ot-shape.hh

@@ -74,10 +74,18 @@ struct hb_ot_shape_plan_t
 #endif
   hb_mask_t rtlm_mask;
   hb_mask_t kern_mask;
+#ifndef HB_NO_SHAPE_AAT
   hb_mask_t trak_mask;
+#else
+  static constexpr hb_mask_t trak_mask = 0;
+#endif
 
   bool requested_kerning : 1;
+#ifndef HB_NO_SHAPE_AAT
   bool requested_tracking : 1;
+#else
+  static constexpr bool requested_tracking = false;
+#endif
 #ifndef HB_NO_OT_SHAPE_FRACTIONS
   bool has_frac : 1;
 #else