Dependent links are not moved when node is moved in UpdateQ

Possible issue found by code inspection when chasing a different bug.

The following method should call GetUpdate on ls rather than state,
as state is the IFMapNodeState for the original node that was moved.
The purpose of this method is to move all the IFMapLinkStates for
the node.

void IFMapExporter::MoveDependentLinks(IFMapNodeState *state) {
    for (IFMapNodeState::iterator iter = state->begin();
         iter != state->end();
         ++iter) {
        IFMapLink *link = iter.operator->();
        IFMapLinkState *ls = LinkStateLookup(link);
        if (ls == NULL) {
            continue;
        }
        IFMapUpdate *update = state->GetUpdate(IFMapListEntry::UPDATE);
        if (update == NULL) {
            continue;
        }
        assert(!update->advertise().empty());
        queue()->Dequeue(update);
        queue()->Enqueue(update);
        sender()->QueueActive();
    }
}

Need to create a test for this scenario.