From afd9a58bd76032f98fa1daf579c780121ddcdfb6 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Fri, 18 Nov 2022 16:46:01 -0700
Subject: [PATCH] [vector] Save a couple hb_iter() invocations

---
 src/hb-vector.hh | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/hb-vector.hh b/src/hb-vector.hh
index 32adbf5cc..27eca0480 100644
--- a/src/hb-vector.hh
+++ b/src/hb-vector.hh
@@ -53,9 +53,10 @@ struct hb_vector_t
 	    hb_requires (hb_is_iterable (Iterable))>
   hb_vector_t (const Iterable &o) : hb_vector_t ()
   {
-    if (hb_iter (o).is_random_access_iterator)
-      alloc (hb_len (hb_iter (o)));
-    hb_copy (o, *this);
+    auto iter = hb_iter (o);
+    if (iter.is_random_access_iterator)
+      alloc (hb_len (iter));
+    hb_copy (iter, *this);
   }
   hb_vector_t (const hb_vector_t &o) : hb_vector_t ()
   {