conncycle: Don't return success on failure

Fixed missing 'continue' within loop

Change-Id: I7b336762415db32e9aa7e95abaa9aa829e492419
Reviewed-on: http://review.couchbase.org/35004
Tested-by: Mark Nunberg <mnunberg@haskalah.org>
Reviewed-by: Brett Lawson <brett19@gmail.com>