broker: fix error when vdscli call fails
broker: fix error when vdscli call fails

Fix a "variable referenced before assignment" problem that occurred when
a call into vdscli failed.

Change-Id: Ie4f24ace9bccb6ce433da127a8ac0f38b2578f60
Signed-off-by: Greg Padgett <3af508f6206cdc15d61fd615066fc83e4b020700@redhat.com>

oVirt/ovirt-hosted-engine-ha,oVirt/ovirt-hosted-engine-ha,oVirt/ovirt-hosted-engine-ha,oVirt/ovirt-hosted-engine-ha