Another try at fixing arm build
diff --git a/src/hb-ot-hmtx-table.hh b/src/hb-ot-hmtx-table.hh
index e06b888..a0ba7b5 100644
--- a/src/hb-ot-hmtx-table.hh
+++ b/src/hb-ot-hmtx-table.hh
@@ -338,7 +338,7 @@
/* get advance: when no variations, call get_advance_without_var_unscaled.
* when there're variations, get advance value from mtx_map in subset_plan*/
unsigned get_new_gid_advance_unscaled (const hb_subset_plan_t *plan,
- const hb_hashmap_t<unsigned, hb_pair_t<unsigned, int>> *mtx_map,
+ const hb_hashmap_t<hb_codepoint_t, hb_pair_t<unsigned, int>> *mtx_map,
unsigned new_gid,
const accelerator_t &_mtx) const
{
