Issue #3308605 by jamsilver, Dave Reid: Fixed fatal error when...

Issue #3308605 by jamsilver, Dave Reid: Fixed fatal error when xmlsitemap_post_update_reindex_future_revision_content() is run against non-bundleable entity types.

xmlsitemap.post_update.php

@@ -29,7 +29,9 @@ function xmlsitemap_post_update_reindex_future_revision_content() {
           $entity_type = $storage->getEntityType();
           $query = $storage->getQuery();
           $query->currentRevision();
-          $query->condition($entity_type->getKey('bundle'), $bundles, 'IN');
+          if ($entity_type->hasKey('bundle')) {
+            $query->condition($entity_type->getKey('bundle'), $bundles, 'IN');
+          }
           // Disable the access check because we DO want items that are not
           // accessible.
           $query->accessCheck(FALSE);