Comment 2 for bug 1479105

Reviewed: https://review.openstack.org/206764
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=4021fe30a915c5478d1053b08e693c7f5c6270f4
Submitter: Jenkins
Branch: master

commit 4021fe30a915c5478d1053b08e693c7f5c6270f4
Author: Kevin Benton <email address hidden>
Date: Tue Jul 28 16:15:34 2015 -0700

    Initialize port_info dict as blank in OVS agent

    The first assignment of port_info was from the scan_ports function
    which could result in an exception and result in port_info being
    unbound for the port stats scan below.

    This patch just initializes port_info as an empty dict so the port
    stats will always have an input.

    Closes-Bug: #1479105
    Change-Id: I017a6dd334e2673072c977cc13b73e8cceb16712