Undo accidental change

src/hb-ot-shape-complex-arabic.cc

@@ -215,7 +215,7 @@ collect_features_arabic (hb_ot_shape_planner_t *plan)
   {
     bool has_fallback = plan->props.script == HB_SCRIPT_ARABIC && !FEATURE_IS_SYRIAC (arabic_features[i]);
     map->add_feature (arabic_features[i], 1, has_fallback ? F_HAS_FALLBACK : F_NONE);
-    //map->add_gsub_pause (NULL);
+    map->add_gsub_pause (NULL);
   }
 
   map->add_feature (HB_TAG('r','l','i','g'), 1, F_GLOBAL|F_HAS_FALLBACK);