CCBC-239 Do not use socket after failout

Change-Id: I42c80cb8156354d2ad0e24954ff099d64fbb2a05
Reviewed-on: http://review.couchbase.org/28392
Tested-by: Sergey Avseyev <sergey.avseyev@gmail.com>
Reviewed-by: Mark Nunberg <mnunberg@haskalah.org>