Update harfbuzz-ng to 0.9.17

third_party/harfbuzz-ng/src/hb-ot-shape-complex-arabic-fallback.hh

 /*
  * Copyright © 2012  Google, Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.
  *
  * Permission is hereby granted, without written agreement and without
  * license or royalty fees, to use, copy, modify, and distribute this
  * software and its documentation for any purpose, provided that the
  * above copyright notice and the following two paragraphs appear in
  * all copies of this software.
@@ skipping 194 matching lines @@
 static const arabic_fallback_plan_t arabic_fallback_plan_nil = {};
 
 static arabic_fallback_plan_t *
 arabic_fallback_plan_create (const hb_ot_shape_plan_t *plan,
                              hb_font_t *font)
 {
   arabic_fallback_plan_t *fallback_plan = (arabic_fallback_plan_t *) calloc (1, sizeof (arabic_fallback_plan_t));
   if (unlikely (!fallback_plan))
     return const_cast<arabic_fallback_plan_t *> (&arabic_fallback_plan_nil);
 
-  for (unsigned int i = 0; i < ARABIC_NUM_FALLBACK_FEATURES; i++) {
+  for (unsigned int i = 0; i < ARABIC_NUM_FALLBACK_FEATURES; i++)
+  {
+    fallback_plan->digest_array[i].init ();
     fallback_plan->mask_array[i] = plan->map.get_1_mask (arabic_fallback_features[i]);
     if (fallback_plan->mask_array[i]) {
       fallback_plan->lookup_array[i] = arabic_fallback_synthesize_lookup (plan, font, i);
       if (fallback_plan->lookup_array[i])
         fallback_plan->lookup_array[i]->add_coverage (&fallback_plan->digest_array[i]);
     }
   }
 
   return fallback_plan;
 }
@@ skipping 18 matching lines @@
 {
   for (unsigned int i = 0; i < ARABIC_NUM_FALLBACK_FEATURES; i++)
     if (fallback_plan->lookup_array[i]) {
       OT::hb_apply_context_t c (0, font, buffer, fallback_plan->mask_array[i], true/*auto_zwj*/);
       fallback_plan->lookup_array[i]->apply_string (&c, &fallback_plan->digest_array[i]);
     }
 }
 
 
 #endif /* HB_OT_SHAPE_COMPLEX_ARABIC_FALLBACK_HH */