minor fix against issue https://s3.amazonaws.com/archive.travis-ci.org/jobs/36345624/log.txt
minor fix against issue https://s3.amazonaws.com/archive.travis-ci.org/jobs/36345624/log.txt

i've not clearly understood why this has happened by the way this condition may happens also in case of race conditions between explicit doce flow deletion of the object (let say logout on sessions) and the expire time.

vodkina/GlobaLeaks,vodkina/GlobaLeaks,vodkina/GlobaLeaks,vodkina/GlobaLeaks