From 5bc0fa1dff4e72b57875765458ebf4b9b62c4544 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Thu, 28 Jun 2012 08:22:06 -0700
Subject: [PATCH] Default the IO.select result to empty array to avoid nil
 errors

---
 lib/vagrant/util/subprocess.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/vagrant/util/subprocess.rb b/lib/vagrant/util/subprocess.rb
index 31e3c9871..5c608e210 100644
--- a/lib/vagrant/util/subprocess.rb
+++ b/lib/vagrant/util/subprocess.rb
@@ -102,6 +102,7 @@ module Vagrant
         while true
           writers = notify_stdin ? [process.io.stdin] : []
           results = IO.select([stdout, stderr], writers, nil, timeout || 5)
+          results ||= []
           readers = results[0]
           writers = results[1]