[Plugin: WooCommerce PDF Invoices & Packing Slips] Ship to: alwasy fill in field

<table class="order-data-addresses">
	<tr>
		<td class="address shipping-address">
			<?php if ( isset($wpo_wcpdf->settings->template_settings['invoice_shipping_address']) && $wpo_wcpdf->ships_to_different_address()) { ?>
			<h3><?php _e( 'Ship To:', 'wpo_wcpdf' ); ?></h3>
			<?php $wpo_wcpdf->shipping_address();?>
			<?php } ?>
		</td>
	</tr>
</table>

This prints the shipping_address when its filled in, what I want is when the customer did not fill in a shipping address that it prints the billing_address. This would make my day!