Update harfbuzz-ng to 0.9.17

third_party/harfbuzz-ng/src/hb-atomic-private.hh

 /*
  * Copyright © 2007  Chris Wilson
  * Copyright © 2009,2010  Red Hat, Inc.
  * 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
@@ skipping 29 matching lines @@
 /* We need external help for these */
 
 #if 0
 
 
 #elif !defined(HB_NO_MT) && (defined(_WIN32) || defined(__CYGWIN__))
 
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 
+#if defined(__MINGW32__) && !defined(MemoryBarrier)
+static inline void _HBMemoryBarrier (void) {
+  long dummy = 0;
+  InterlockedExchange (&dummy, 1);
+}
+# define MemoryBarrier _HBMemoryBarrier
+#endif
+
 typedef LONG hb_atomic_int_t;
 #define hb_atomic_int_add(AI, V)        InterlockedExchangeAdd (&(AI), (V))
 
 #define hb_atomic_ptr_get(P)            (MemoryBarrier (), (void *) *(P))
 #define hb_atomic_ptr_cmpexch(P,O,N)    (InterlockedCompareExchangePointer ((void **) (P), (void *) (N), (void *) (O)) == (void *) (O))
 
 
 #elif !defined(HB_NO_MT) && defined(__APPLE__)
 
 #include <libkern/OSAtomic.h>
@@ skipping 55 matching lines @@
 #define hb_atomic_int_add(AI, V)        (((AI) += (V)) - (V))
 
 #define hb_atomic_ptr_get(P)            ((void *) *(P))
 #define hb_atomic_ptr_cmpexch(P,O,N)    (* (void **) (P) == (void *) (O) ? (* (void **) (P) = (void *) (N), true) : false)
 
 #endif
 
 /* TODO Add tracing. */
 
 #endif /* HB_ATOMIC_PRIVATE_HH */