From cf3b305c43b81161c2c9bdfba48823ecf7e41c6c Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Wed, 30 Nov 2022 19:06:12 +0900
Subject: [PATCH] [ruby/un] wait_writable: close opened file

https://github.com/ruby/un/commit/b08aeb9c48
---
 lib/un.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/un.rb b/lib/un.rb
index 535a077bd6..796b36fbab 100644
--- a/lib/un.rb
+++ b/lib/un.rb
@@ -256,7 +256,7 @@ def wait_writable
     wait = (wait = options[:w]) ? Float(wait) : 0.2
     argv.each do |file|
       begin
-        File.open(file, "r+b")
+        File.open(file, "r+b") {}
       rescue Errno::ENOENT
         break
       rescue Errno::EACCES => e