Cleanup TRUE/FALSE vs true/false
diff --git a/src/hb-buffer.h b/src/hb-buffer.h
index ca1bbf4..fe53197 100644
--- a/src/hb-buffer.h
+++ b/src/hb-buffer.h
@@ -121,13 +121,13 @@
void
hb_buffer_reset (hb_buffer_t *buffer);
-/* Returns FALSE if allocation failed */
+/* Returns false if allocation failed */
hb_bool_t
hb_buffer_pre_allocate (hb_buffer_t *buffer,
unsigned int size);
-/* Returns FALSE if allocation has failed before */
+/* Returns false if allocation has failed before */
hb_bool_t
hb_buffer_allocation_successful (hb_buffer_t *buffer);