src/java.desktop/share/native/libfontmanager/harfbuzz/hb-mutex-private.hh

@@ -66,11 +66,11 @@
 #elif !defined(HB_NO_MT) && (defined(HAVE_PTHREAD) || defined(__APPLE__))
 
 #include <pthread.h>
 typedef pthread_mutex_t hb_mutex_impl_t;
 #define HB_MUTEX_IMPL_INIT      PTHREAD_MUTEX_INITIALIZER
-#define hb_mutex_impl_init(M)   pthread_mutex_init (M, NULL)
+#define hb_mutex_impl_init(M)   pthread_mutex_init (M, nullptr)
 #define hb_mutex_impl_lock(M)   pthread_mutex_lock (M)
 #define hb_mutex_impl_unlock(M) pthread_mutex_unlock (M)
 #define hb_mutex_impl_finish(M) pthread_mutex_destroy (M)