From e9c02c6762dd5fe9664e5972b8e6307e6da8e68f Mon Sep 17 00:00:00 2001
From: Brian White <mscdex@mscdex.net>
Date: Mon, 24 Apr 2017 02:20:38 -0400
Subject: [PATCH] stream: fix permanent deoptimizations

PR-URL: https://github.com/nodejs/node/pull/12456
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
---
 lib/_stream_readable.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/_stream_readable.js b/lib/_stream_readable.js
index b2859ea3d28..879e5ddb53f 100644
--- a/lib/_stream_readable.js
+++ b/lib/_stream_readable.js
@@ -686,7 +686,7 @@ Readable.prototype.unpipe = function(dest) {
   }
 
   // try to find the right one.
-  const index = state.pipes.indexOf(dest);
+  var index = state.pipes.indexOf(dest);
   if (index === -1)
     return this;