[array/vector] Rename len to length
diff --git a/src/hb-face.cc b/src/hb-face.cc
index 8bb8c51..1042d70 100644
--- a/src/hb-face.cc
+++ b/src/hb-face.cc
@@ -619,7 +619,7 @@
 {
   hb_face_builder_data_t *data = (hb_face_builder_data_t *) user_data;
 
-  for (unsigned int i = 0; i < data->tables.len; i++)
+  for (unsigned int i = 0; i < data->tables.length; i++)
     hb_blob_destroy (data->tables[i].blob);
 
   data->tables.fini ();
@@ -631,7 +631,7 @@
 _hb_face_builder_data_reference_blob (hb_face_builder_data_t *data)
 {
 
-  unsigned int table_count = data->tables.len;
+  unsigned int table_count = data->tables.length;
   unsigned int face_length = table_count * 16 + 12;
 
   for (unsigned int i = 0; i < table_count; i++)