[ovs-git] [openvswitch/ovs] a4be01: ovn-controller: Fix possible null pointer derefere...

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/openvswitch/ovs
  Commit: a4be012315afddf07f5a2e8f5209ebba212dd75d
      https://github.com/openvswitch/ovs/commit/a4be012315afddf07f5a2e8f5209ebba212dd75d
  Author: Justin Pettit <jpettit at ovn.org>
  Date:   2016-09-20 (Tue, 20 Sep 2016)

  Changed paths:
    M ovn/controller/ovn-controller.c

  Log Message:
  -----------
  ovn-controller: Fix possible null pointer dereference.

The code dereferences "chassis", which could be null if chassis_run()
returns null.  "chassis" will always be null if "chassis_id" is null, so
checking "chassis" is sufficient to check both.

Found by inspection.

Signed-off-by: Justin Pettit <jpettit at ovn.org>