From 8bcc9f4cb14ceef3ff26b4c0ea86d49ce547b4dd Mon Sep 17 00:00:00 2001
From: Rob Rix <rob.rix@me.com>
Date: Wed, 30 May 2018 10:33:28 -0400
Subject: [PATCH] Placate hlint.

---
 src/Data/Abstract/Ref.hs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Data/Abstract/Ref.hs b/src/Data/Abstract/Ref.hs
index 2b15de34a..4e218a598 100644
--- a/src/Data/Abstract/Ref.hs
+++ b/src/Data/Abstract/Ref.hs
@@ -14,4 +14,4 @@ data ValueRef value where
   deriving (Eq, Ord, Show)
 
 
-data Ref address value = Ref address
+newtype Ref address value = Ref address