Cleanup TRUE/FALSE vs true/false
diff --git a/src/hb-atomic-private.hh b/src/hb-atomic-private.hh
index 0e7ecae..918852d 100644
--- a/src/hb-atomic-private.hh
+++ b/src/hb-atomic-private.hh
@@ -94,7 +94,7 @@
#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 * volatile *) (P) == (void *) (O) ? (* (void * volatile *) (P) = (void *) (N), TRUE) : FALSE)
+#define hb_atomic_ptr_cmpexch(P,O,N) (* (void * volatile *) (P) == (void *) (O) ? (* (void * volatile *) (P) = (void *) (N), true) : false)
#else /* HB_NO_MT */
@@ -103,7 +103,7 @@
#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)
+#define hb_atomic_ptr_cmpexch(P,O,N) (* (void **) (P) == (void *) (O) ? (* (void **) (P) = (void *) (N), true) : false)
#endif