Roll HarfBuzz to 0.9.32

third_party/harfbuzz-ng/src/hb-buffer-serialize.cc

 /*
  * Copyright © 2012,2013  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 45 matching lines @@
  * 
  *
  * Return value: 
  *
  * Since: 1.0
  **/
 hb_buffer_serialize_format_t
 hb_buffer_serialize_format_from_string (const char *str, int len)
 {
   /* Upper-case it. */
-  return (hb_buffer_serialize_format_t) (hb_tag_from_string (str, len) & ~0x20202020);
+  return (hb_buffer_serialize_format_t) (hb_tag_from_string (str, len) & ~0x20202020u);
 }
 
 /**
  * hb_buffer_serialize_format_to_string:
  * @format: 
  *
  * 
  *
  * Return value: 
  *
@@ skipping 313 matching lines @@
       return _hb_buffer_deserialize_glyphs_json (buffer,
                                                  buf, buf_len, end_ptr,
                                                  font);
 
     default:
     case HB_BUFFER_SERIALIZE_FORMAT_INVALID:
       return false;
 
   }
 }