From 23eac7ab897818689eeff6a810354d85543ad2bb Mon Sep 17 00:00:00 2001
From: Markus Reiter
Date: Tue, 20 Sep 2016 22:24:31 +0200
Subject: Fix DoubleNegation.

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

(limited to 'Library/Homebrew/os/mac/xcode.rb')

diff --git a/Library/Homebrew/os/mac/xcode.rb b/Library/Homebrew/os/mac/xcode.rb
index 3aab9bf52..dac8b8f1e 100644
--- a/Library/Homebrew/os/mac/xcode.rb
+++ b/Library/Homebrew/os/mac/xcode.rb
@@ -175,7 +175,7 @@ module OS
       # Returns true even if outdated tools are installed, e.g.
       # tools from Xcode 4.x on 10.9
       def installed?
-        !!detect_version
+        !detect_version.nil?
       end
 
       def update_instructions
-- 
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