Update harfbuzz-ng to 0.9.24

third_party/harfbuzz-ng/src/hb-buffer.h

Index: third_party/harfbuzz-ng/src/hb-buffer.h
diff --git a/third_party/harfbuzz-ng/src/hb-buffer.h b/third_party/harfbuzz-ng/src/hb-buffer.h
index 55a4045719334eb1f0a8c39d2ae79e497fe9cef3..3086851b012f7189042b8f873ec0f48ef0d32eb4 100644
--- a/third_party/harfbuzz-ng/src/hb-buffer.h
+++ b/third_party/harfbuzz-ng/src/hb-buffer.h
@@ -171,11 +171,11 @@ void
 hb_buffer_guess_segment_properties (hb_buffer_t *buffer);
 
 
-typedef enum {
-  HB_BUFFER_FLAGS_DEFAULT			= 0x00000000,
-  HB_BUFFER_FLAG_BOT				= 0x00000001, /* Beginning-of-text */
-  HB_BUFFER_FLAG_EOT				= 0x00000002, /* End-of-text */
-  HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES	= 0x00000004
+typedef enum { /*< flags >*/
+  HB_BUFFER_FLAG_DEFAULT			= 0x00000000u,
+  HB_BUFFER_FLAG_BOT				= 0x00000001u, /* Beginning-of-text */
+  HB_BUFFER_FLAG_EOT				= 0x00000002u, /* End-of-text */
+  HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES	= 0x00000004u
 } hb_buffer_flags_t;
 
 void
@@ -274,11 +274,11 @@ hb_buffer_normalize_glyphs (hb_buffer_t *buffer);
  * Serialize
  */
 
-typedef enum {
-  HB_BUFFER_SERIALIZE_FLAGS_DEFAULT		= 0x00000000,
-  HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS		= 0x00000001,
-  HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS		= 0x00000002,
-  HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES	= 0x00000004
+typedef enum { /*< flags >*/
+  HB_BUFFER_SERIALIZE_FLAG_DEFAULT		= 0x00000000u,
+  HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS		= 0x00000001u,
+  HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS		= 0x00000002u,
+  HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES	= 0x00000004u
 } hb_buffer_serialize_flags_t;
 
 typedef enum {