Order and in the email issues if no licensed product is present in the order.

Hello!

The $heading variable text (default ‘Your license key(s)’) appears in the order details and in the email even if no licensed product is present in the order.
Probably there is a more elegant solution to solve the problem, but the one I was using was to change the template files as shown below.
The indent has not been modified to keep the minimum difference from the original shape.

1. order-view-license-keys.php.patch content is:

diff U3Bb license-manager-for-woocommerce/templates/order-view-license-keys.php trunk/templates/order-view-license-keys.php
--- license-manager-for-woocommerce/templates/order-view-license-keys.php	Tue May  7 18:32:27 2019
+++ trunk/templates/order-view-license-keys.php	Tue May  7 18:50:31 2019
@@ -1,5 +1,15 @@
 <?php defined('ABSPATH') || exit; ?>
 
+<?php $counter = 0;
+foreach ( $data as $product_id => $row ) {
+	foreach ( $row['keys'] as $entry ) {
+		if ( $entry->license_key ) {
+			$counter = $counter + 1;
+		}
+	}
+} ?>
+
+<?php if ( $counter ): ?>
 <h2><?php esc_html_e($heading);?></h2>
 
 <?php foreach ($data as $product_id => $row): ?>
@@ -28,4 +38,4 @@
         </tbody>
     </table>
 <?php endforeach; ?>
-
+<?php endif; ?>

2. email-order-license-keys.patch content is:

diff U3Bb license-manager-for-woocommerce/templates/emails/email-order-license-keys.php trunk/templates/emails/email-order-license-keys.php
--- license-manager-for-woocommerce/templates/emails/email-order-license-keys.php	Tue May  7 18:32:28 2019
+++ trunk/templates/emails/email-order-license-keys.php	Tue May  7 20:14:38 2019
@@ -1,5 +1,15 @@
 <?php defined('ABSPATH') || exit; ?>
 
+<?php $counter = 0;
+foreach ( $data as $product_id => $row ) {
+	foreach ( $row['keys'] as $entry ) {
+		if ( $entry->license_key ) {
+			$counter = $counter + 1;
+		}
+	}
+} ?>
+
+<?php if ( $counter ): ?>
 <h2><?php esc_html_e($heading);?></h2>
 
 <div style="margin-bottom: 40px;">
@@ -33,3 +43,4 @@
         </table>
     <?php endforeach; ?>
 </div>
+<?php endif; ?>