From e0b43a79b7149291ff3c26946fda4378bd16400a Mon Sep 17 00:00:00 2001
From: Chad Brokaw <cbrokaw@gmail.com>
Date: Tue, 10 Dec 2024 15:00:09 -0500
Subject: [PATCH] fix it

---
 read-fonts/src/tables/variations.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/read-fonts/src/tables/variations.rs b/read-fonts/src/tables/variations.rs
index 5dc307692..a72c5ae48 100644
--- a/read-fonts/src/tables/variations.rs
+++ b/read-fonts/src/tables/variations.rs
@@ -373,7 +373,7 @@ impl Iterator for PackedPointNumbersIter<'_> {
             return None;
         }
         self.seen += 1;
-        self.last_val += self.current_run.next()?;
+        self.last_val = self.last_val.checked_add(self.current_run.next()?)?;
         Some(self.last_val)
     }