Don't assume $_SESSION is set in Session\Type\AbstractSession

- Address https://github.com/friendica/friendica/issues/13699#issuecomment-1845584812

diff --git a/src/Core/Session/Type/AbstractSession.php b/src/Core/Session/Type/AbstractSession.php
index 8e990d117608b7ac579035055d5ff98d5dfed8b7..1993156f7f14bfd4e356c1172458d7c66755946a 100644 (file)
--- a/src/Core/Session/Type/AbstractSession.php
+++ b/src/Core/Session/Type/AbstractSession.php
@@ -79,7 +79,7 @@ class AbstractSession implements IHandleSessions
         */
        public function setMultiple(array $values)
        {
-               $_SESSION = $values + $_SESSION;
+               $_SESSION = $values + ($_SESSION ?? []);
        }
 
        /**