Comment 2 for bug 1077651

Reviewed: https://review.openstack.org/15832
Committed: http://github.com/openstack/quantum/commit/b1c35c2a4619b9b0f6ffac84caa8954c6c9953e0
Submitter: Jenkins
Branch: master

commit b1c35c2a4619b9b0f6ffac84caa8954c6c9953e0
Author: Gary Kotton <email address hidden>
Date: Wed Nov 7 05:46:08 2012 +0000

    Treat case when pid is None

    Fixes bug 1077651

    Change-Id: Id80d923d36a0339eee860e8cf37aacc6866fc6bc