From ca6f4ecaa5f530c43e1e5b05ab9ba30d60df6296 Mon Sep 17 00:00:00 2001
From: Tyler Brock <tyler.brock@gmail.com>
Date: Thu, 5 Apr 2012 12:47:58 -0400
Subject: [PATCH] RUBY-433 prevent additonal possible IOError

---
 lib/mongo/connection.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/mongo/connection.rb b/lib/mongo/connection.rb
index ee48648..fbc2451 100644
--- a/lib/mongo/connection.rb
+++ b/lib/mongo/connection.rb
@@ -629,7 +629,9 @@ module Mongo
       rescue OperationFailure, SocketError, SystemCallError, IOError
         close
       ensure
-        socket.close if socket
+        if socket
+          socket.close unless socket.closed?
+        end
       end
 
       config