use nullable types for some class properties instead of phpdoc hints

1 files changed, 1 insertions, 2 deletions

diff --git a/classes/db.php b/classes/db.php
index d815095..42422b2 100644
--- a/classes/db.php
+++ b/classes/db.php
@@ -1,7 +1,6 @@
 <?php
 class Db {
-	/** @var Db|null */
-	private static $instance;
+	private static ?Db $instance = null;
 
 	private PDO $pdo;