Style fixes.

module/VuFind/src/VuFind/Hierarchy/TreeDataSource/Solr.php

@@ -120,7 +120,7 @@ class Solr extends AbstractBase
      *
      * @param string $parentID The starting point for the current recursion
      * (equivlent to Solr field hierarchy_parent_id)
-     * @param string $count    The total count of items in the tree
+     * @param string &$count   The total count of items in the tree
      * before this recursion
      *
      * @return string

module/VuFind/src/VuFind/Hierarchy/TreeRenderer/AbstractBase.php

@@ -96,7 +96,9 @@ abstract class AbstractBase
             $hierarchyDriver = $this->getRecordDriver()
                 ->tryMethod('getHierarchyDriver');
             if (!is_object($hierarchyDriver)) {
-                throw new \Exception('Cannot load hierarchy driver from record driver.');
+                throw new \Exception(
+                    'Cannot load hierarchy driver from record driver.'
+                );
             }
             $this->dataSource = $hierarchyDriver->getTreeSource();
         }