drupal/nexx_integration: fix hard coded tags vocabulary

nexx_integration-fix_hard_coded_tags_vocabulary-2.patch

diff --git a/src/Controller/OmniaController.php b/src/Controller/OmniaController.php
index 436d635..a3161ca 100644
--- a/src/Controller/OmniaController.php
+++ b/src/Controller/OmniaController.php
@@ -461,7 +461,7 @@ class OmniaController extends ControllerBase {
     }
 
     if (!empty($fields['tag_field'])) {
-      $mapped_tag_ids = $this->mapMultipleTermIds($tag_ids, 'tags');
+      $mapped_tag_ids = $this->mapMultipleTermIds($tag_ids);
       $media->set($fields['tag_field'], $mapped_tag_ids);
     }
 
@@ -579,17 +579,21 @@ class OmniaController extends ControllerBase {
    * @return int
    *   The drupal id of the term.
    */
-  protected function mapTermId($omnia_id, $vid) {
-    $result = $this->database->select('nexx_taxonomy_term_data', 'n')
+  protected function mapTermId($omnia_id, $vid = NULL) {
+    $query = $this->database->select('nexx_taxonomy_term_data', 'n')
       ->fields('n', ['tid'])
-      ->condition('n.nexx_item_id', $omnia_id)
-      ->condition('n.vid', $vid)
-      ->execute();
+      ->condition('n.nexx_item_id', $omnia_id);
 
-    $drupal_id = $result->fetchField();
+    if (!empty($vid)) {
+      $query->condition('n.vid', $vid);
+    }
+    $result = $query->execute();
 
-    return $drupal_id;
-  }
+    if ($tid = $result->fetchField()) {
+      return $tid;
+    }
+    return FALSE;
+	}
 
   /**
    * Map multiple omnia term ids to drupal term ids.
@@ -602,7 +606,7 @@ class OmniaController extends ControllerBase {
    * @return int[]
    *   Array of mapped drupal ids, might contain less ids then the input array.
    */
-  protected function mapMultipleTermIds(array $omnia_ids, $vid) {
+  protected function mapMultipleTermIds(array $omnia_ids, $vid = NULL) {
     $drupal_ids = [];
     foreach ($omnia_ids as $omnia_id) {
       if (empty($omnia_id)) {