https://git.ruby-lang.org/ruby.git/commit/?id=4562dad94c

From 4562dad94c6af3db5af8704b0aec64119456275d Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Fri, 28 Jun 2019 12:36:03 +0900
Subject: Removed unused variable


diff --git a/tool/mkconfig.rb b/tool/mkconfig.rb
index edfdda2..586eb9e 100755
--- a/tool/mkconfig.rb
+++ b/tool/mkconfig.rb
@@ -347,7 +347,7 @@ print <<EOS https://github.com/ruby/ruby/blob/trunk/tool/mkconfig.rb#L347
   #
   # returns updated keys list, or +nil+ if nothing changed.
   def RbConfig.fire_update!(key, val, mkconf = MAKEFILE_CONFIG, conf = CONFIG)
-    return if (old = mkconf[key]) == val
+    return if mkconf[key] == val
     mkconf[key] = val
     keys = [key]
     deps = []
-- 
cgit v0.10.2


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