Roll harfbuzz-ng to 0.9.40

third_party/harfbuzz-ng/src/hb-ot-head-table.hh

Index: third_party/harfbuzz-ng/src/hb-ot-head-table.hh
diff --git a/third_party/harfbuzz-ng/src/hb-ot-head-table.hh b/third_party/harfbuzz-ng/src/hb-ot-head-table.hh
index ec4e8c9d453c3980a50b541fa47c1cbf9acbfc48..268f133408c58422a74f0b15225e4e199233dbff 100644
--- a/third_party/harfbuzz-ng/src/hb-ot-head-table.hh
+++ b/third_party/harfbuzz-ng/src/hb-ot-head-table.hh
@@ -45,13 +45,15 @@ struct head
 {
   static const hb_tag_t tableTag	= HB_OT_TAG_head;
 
-  inline unsigned int get_upem (void) const {
+  inline unsigned int get_upem (void) const
+  {
     unsigned int upem = unitsPerEm;
     /* If no valid head table found, assume 1000, which matches typical Type1 usage. */
     return 16 <= upem && upem <= 16384 ? upem : 1000;
   }
 
-  inline bool sanitize (hb_sanitize_context_t *c) {
+  inline bool sanitize (hb_sanitize_context_t *c) const
+  {
     TRACE_SANITIZE (this);
     return TRACE_RETURN (c->check_struct (this) && likely (version.major == 1));
   }