kazu	2018-06-10 01:05:38 +0900 (Sun, 10 Jun 2018)

  New Revision: 63617

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=63617

  Log:
    Revert "Use `&.` instead of modifier if"
    
    This reverts commit 9d015aa91cc3ec45e41be58fd836fb7f6655a624.
    
    Because tool/extlibs.rb runs with BASERUBY that may be ruby < 2.3

  Modified files:
    trunk/tool/extlibs.rb
Index: tool/extlibs.rb
===================================================================
--- tool/extlibs.rb	(revision 63616)
+++ tool/extlibs.rb	(revision 63617)
@@ -65,7 +65,7 @@ class ExtLibs https://github.com/ruby/ruby/blob/trunk/tool/extlibs.rb#L65
     when '.zip'
       pid = Process.spawn("unzip", inp, "-d", dir)
     end
-    f&.close
+    f.close if f
     Process.wait(pid)
     $?.success? or raise "failed to extract #{cache}"
   end

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