Fix problem with departures not loading when unknown vehicle is present on list

 index.js

@@ -184,7 +184,7 @@
            var dir_cell = addCellWithText(tr, data.old[i].direction);
            var vehicle = parseVehicle(data.old[i].vehicleId);
            dir_cell.appendChild(displayVehicle(vehicle));
            addCellWithText(tr, vehicle.num).className = 'vehicleData';
            addCellWithText(tr, (vehicle ? vehicle.num : '')).className = 'vehicleData';
            var status = parseStatus(data.old[i]);
            addCellWithText(tr, status);
            addCellWithText(tr, '');
@@ -202,7 +202,7 @@
            var dir_cell = addCellWithText(tr, data.actual[i].direction);
            var vehicle = parseVehicle(data.actual[i].vehicleId);
            dir_cell.appendChild(displayVehicle(vehicle));
            addCellWithText(tr, vehicle.num).className = 'vehicleData';
            addCellWithText(tr, (vehicle ? vehicle.num : '')).className = 'vehicleData';
            var status = parseStatus(data.actual[i]);
            var status_cell = addCellWithText(tr, status);
            var delay = parseDelay(data.actual[i]);
@@ -267,7 +267,9 @@
        deleteChildren(route_vehicle);
        if(vehicleInfo) {
            var span = displayVehicle(vehicleInfo);
            if(span) {
            setText(route_vehicle, span.title);
            }
            route_vehicle.insertBefore(span, route_vehicle.firstChild);
        }