From e73b5ff4cd0c2ba4587c49bf310bb1421b47e725 Mon Sep 17 00:00:00 2001
From: Andrew Murray <radarhere@users.noreply.github.com>
Date: Wed, 3 Sep 2025 19:35:01 +1000
Subject: [PATCH] Do not unnecessarily update __offset

---
 src/PIL/FliImagePlugin.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/PIL/FliImagePlugin.py b/src/PIL/FliImagePlugin.py
index ccb8a5953..679a9edd9 100644
--- a/src/PIL/FliImagePlugin.py
+++ b/src/PIL/FliImagePlugin.py
@@ -77,8 +77,7 @@ class FliImageFile(ImageFile.ImageFile):
 
         if i16(s, 4) == 0xF100:
             # prefix chunk; ignore it
-            self.__offset = self.__offset + i32(s)
-            self.fp.seek(self.__offset)
+            self.fp.seek(self.__offset + i32(s))
             s = self.fp.read(16)
 
         if i16(s, 4) == 0xF1FA: