[API} hb_buffer_get_glyph_{infos,positions}: Add length out parameter
Return the length, whenever we return an array. Makes it easier on the
language bindings.
diff --git a/src/hb-buffer.h b/src/hb-buffer.h
index 293ec82..3c0a442 100644
--- a/src/hb-buffer.h
+++ b/src/hb-buffer.h
@@ -160,11 +160,13 @@
/* Return value valid as long as buffer not modified */
hb_glyph_info_t *
-hb_buffer_get_glyph_infos (hb_buffer_t *buffer);
+hb_buffer_get_glyph_infos (hb_buffer_t *buffer,
+ unsigned int *length);
/* Return value valid as long as buffer not modified */
hb_glyph_position_t *
-hb_buffer_get_glyph_positions (hb_buffer_t *buffer);
+hb_buffer_get_glyph_positions (hb_buffer_t *buffer,
+ unsigned int *length);
HB_END_DECLS
