pillowfight.cc: put new lines before connect errors

Change-Id: I98955500785ec92c12f19290f3a34b5e77e37dac
Reviewed-on: http://review.couchbase.org/25103
Tested-by: Sergey Avseyev <sergey.avseyev@gmail.com>
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>