CBQE-0: fix indendent in results_handler

indentation is wrong if release_to_compare or version_to_compare are not specified

Change-Id: I6e88b370cd2e6c319ec020707376212c8f090829
Reviewed-on: http://review.couchbase.org/28342
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>