From 53ecd7f3f7814ba5ac956b0f98e4d7059785343a Mon Sep 17 00:00:00 2001
From: kazu <kazu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 9 Jun 2018 01:55:31 +0000
Subject: [PATCH] Use `&.` instead of modifier if

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63616 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 tool/extlibs.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tool/extlibs.rb b/tool/extlibs.rb
index a840724794..94917a95a0 100755
--- a/tool/extlibs.rb
+++ b/tool/extlibs.rb
@@ -65,7 +65,7 @@ class ExtLibs
     when '.zip'
       pid = Process.spawn("unzip", inp, "-d", dir)
     end
-    f.close if f
+    f&.close
     Process.wait(pid)
     $?.success? or raise "failed to extract #{cache}"
   end