From 9b9762ccecee4e68376038d6eb6b1341511f3c39 Mon Sep 17 00:00:00 2001
From: Anna Henningsen <anna@addaleax.net>
Date: Tue, 18 Oct 2016 22:30:03 +0200
Subject: [PATCH] streams: fix regression in `unpipe()`

Since 2e568d9 there is a bug where unpiping a stream
from a readable stream that has `_readableState.pipesCount > 1`
will cause it to remove the first stream in the
`_.readableState.pipes` array no matter where in the list the
`dest` stream was.

This patch corrects that problem.

Ref: https://github.com/nodejs/node/pull/9553
PR-URL: https://github.com/nodejs/node/pull/9171
Fixes: https://github.com/nodejs/node/issues/9170
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Myles Borins <myles.borins@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 92a1f6ad1ed52d..afa92f1d8cc907 100644
--- a/lib/_stream_readable.js
+++ b/lib/_stream_readable.js
@@ -664,7 +664,7 @@ Readable.prototype.unpipe = function(dest) {
   if (index === -1)
     return this;
 
-  state.pipes.splice(i, 1);
+  state.pipes.splice(index, 1);
   state.pipesCount -= 1;
   if (state.pipesCount === 1)
     state.pipes = state.pipes[0];