lint: Fix a couple lint reported issues

include/staff/tickets.inc.php

@@ -152,7 +152,7 @@ case 'updated':
 // Apply requested pagination
 $page=($_GET['p'] && is_numeric($_GET['p']))?$_GET['p']:1;
 $pageNav=new Pagenate($tickets->count(), $page, PAGE_LIMIT);
-$pageNav->setUrl('tickets.php', $args);
+$pageNav->setURL('tickets.php', $args);
 $tickets = $pageNav->paginate($tickets);
 
 TicketForm::ensureDynamicDataView();

include/upgrader/streams/core/b26f29a6-1ee831c8.task.php

@@ -58,7 +58,7 @@ class IntlMigrator extends MigrationTask {
             $new_format = '';
             $format = $cfg->get($key);
             foreach (str_split($format) as $char) {
-                $new_format .= @$dateToIntl[$char] ?: $char;
+                $new_format .= @self::$dateToIntl[$char] ?: $char;
             }
             $cfg->set($key, $new_format);