From a41368bd7a0bf14c54b311a4455f7fdc5aa2df4b Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Sun, 30 Jul 2023 17:04:02 -0600
Subject: [PATCH] [buffer] Minor micro-optimize

---
 src/hb-buffer.cc | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/hb-buffer.cc b/src/hb-buffer.cc
index ace2a104f..749ef9bd4 100644
--- a/src/hb-buffer.cc
+++ b/src/hb-buffer.cc
@@ -499,12 +499,12 @@ hb_buffer_t::set_masks (hb_mask_t    value,
 			unsigned int cluster_start,
 			unsigned int cluster_end)
 {
-  hb_mask_t not_mask = ~mask;
-  value &= mask;
-
   if (!mask)
     return;
 
+  hb_mask_t not_mask = ~mask;
+  value &= mask;
+
   unsigned int count = len;
   for (unsigned int i = 0; i < count; i++)
     if (cluster_start <= info[i].cluster && info[i].cluster < cluster_end)