Roll HarfBuzz to 1.2.1

third_party/harfbuzz-ng/src/hb-ot-shape-complex-indic.cc

 /*
  * Copyright © 2011,2012  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 1228 matching lines @@
     {
       last_syllable = syllable;
 
       hb_glyph_info_t ginfo = dottedcircle;
       ginfo.cluster = buffer->cur().cluster;
       ginfo.mask = buffer->cur().mask;
       ginfo.syllable() = buffer->cur().syllable();
       /* TODO Set glyph_props? */
 
       /* Insert dottedcircle after possible Repha. */
-      while (buffer->idx < buffer->len &&
+      while (buffer->idx < buffer->len && !buffer->in_error &&
              last_syllable == buffer->cur().syllable() &&
              buffer->cur().indic_category() == OT_Repha)
         buffer->next_glyph ();
 
       buffer->output_info (ginfo);
     }
     else
       buffer->next_glyph ();
   }
 
@@ skipping 582 matching lines @@
   data_destroy_indic,
   NULL, /* preprocess_text */
   NULL, /* postprocess_glyphs */
   HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS_NO_SHORT_CIRCUIT,
   decompose_indic,
   compose_indic,
   setup_masks_indic,
   HB_OT_SHAPE_ZERO_WIDTH_MARKS_NONE,
   false, /* fallback_position */
 };