From e077bfe6555f0e7ab10bf1f52f815e57607d040e Mon Sep 17 00:00:00 2001
From: Justin Baugh
Date: Thu, 20 Jul 2017 11:57:43 -0400
Subject: Address rubocop issues

---
 Library/Homebrew/diagnostic.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'Library')

diff --git a/Library/Homebrew/diagnostic.rb b/Library/Homebrew/diagnostic.rb
index f5e07ac2f..e6fecb478 100644
--- a/Library/Homebrew/diagnostic.rb
+++ b/Library/Homebrew/diagnostic.rb
@@ -99,7 +99,7 @@ module Homebrew
       end
 
       def check_build_from_source
-        return if !ENV.has_key?("HOMEBREW_BUILD_FROM_SOURCE")
+        return unless ENV.key?("HOMEBREW_BUILD_FROM_SOURCE")
 
         <<-EOS.undent
           You have HOMEBREW_BUILD_FROM_SOURCE set. This environment variable is
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