From 26a162baef96d78656e189b2fa16fdcab7195730 Mon Sep 17 00:00:00 2001
From: Jan Wolski <jan@wolski.fi>
Date: Sun, 15 May 2022 17:49:19 +0300
Subject: gh-89668: Optimize ZipFile file header processing algorithm to avoid
 unneeded IO(gh-25966)

---
 Lib/zipfile.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/zipfile.py b/Lib/zipfile.py
index dc02011..9f44375 100644
--- a/Lib/zipfile.py
+++ b/Lib/zipfile.py
@@ -1564,7 +1564,7 @@ class ZipFile:
 
             fname = zef_file.read(fheader[_FH_FILENAME_LENGTH])
             if fheader[_FH_EXTRA_FIELD_LENGTH]:
-                zef_file.read(fheader[_FH_EXTRA_FIELD_LENGTH])
+                zef_file.seek(fheader[_FH_EXTRA_FIELD_LENGTH], whence=1)
 
             if zinfo.flag_bits & _MASK_COMPRESSED_PATCH:
                 # Zip 2.7: compressed patched data
-- 
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