From 87b9b4e060377f09096db7af977f604749c8a100 Mon Sep 17 00:00:00 2001
From: Lucinda May Phipps <landfillbaby69@gmail.com>
Date: Fri, 20 May 2022 16:14:05 +0100
Subject: [PATCH] shutil._copyfileobj_readinto: tiny speedup (#92377)

---
 Lib/shutil.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Lib/shutil.py b/Lib/shutil.py
index de82453aa56..2cbd808abf2 100644
--- a/Lib/shutil.py
+++ b/Lib/shutil.py
@@ -182,7 +182,8 @@ def _copyfileobj_readinto(fsrc, fdst, length=COPY_BUFSIZE):
                 break
             elif n < length:
                 with mv[:n] as smv:
-                    fdst.write(smv)
+                    fdst_write(smv)
+                break
             else:
                 fdst_write(mv)