Fix runtime warnings

Author: Stefan Weil

module/VuFind/src/VuFind/Db/Table/UserList.php

@@ -76,7 +76,7 @@ public function __construct(
         PluginManager $tm,
         $cfg,
         ?RowGateway $rowObj = null,
-        Container $session = null,
+        ?Container $session = null,
         $table = 'user_list'
     ) {
         $this->session = $session;

module/VuFind/src/VuFind/Tags/TagsService.php

@@ -289,12 +289,12 @@ public function getTagByText(string $text): ?TagsEntityInterface
     /**
      * Get all resources associated with the provided tag query.
      *
-     * @param string $q      Search query
-     * @param string $source Record source (optional limiter)
-     * @param string $sort   Resource field to sort on (optional)
-     * @param int    $offset Offset for results
-     * @param ?int   $limit  Limit for results (null for none)
-     * @param bool   $fuzzy  Are we doing an exact (false) or fuzzy (true) search?
+     * @param string  $q      Search query
+     * @param ?string $source Record source (optional limiter)
+     * @param ?string $sort   Resource field to sort on (optional)
+     * @param int     $offset Offset for results
+     * @param ?int    $limit  Limit for results (null for none)
+     * @param bool    $fuzzy  Are we doing an exact (false) or fuzzy (true) search?
      *
      * @return array
      */