Index: lib/net/http.rb
===================================================================
--- lib/net/http.rb	(revision 26550)
+++ lib/net/http.rb	(working copy)
@@ -1057,7 +1057,7 @@
       res
     rescue => exception
       D "Conn close because of error #{exception}"
-      @socket.close unless @socket.closed?
+      @socket.close if @socket and not @socket.closed?
       raise exception
     end