From 6da9773bbfccf13935b642cb0541a499fc4f71c3 Mon Sep 17 00:00:00 2001
From: Boris Grozev <boris@jitsi.org>
Date: Mon, 30 Jan 2023 11:19:58 -0600
Subject: [PATCH] Add null check for mucUser.

XEP-0045 requires "unavailable" presence to contain extended presence, but Smack shouldn't throw an exception if it doesn't.
---
 .../main/java/org/jivesoftware/smackx/muc/MultiUserChat.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MultiUserChat.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MultiUserChat.java
index 2c6316854..632c8e0cf 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MultiUserChat.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MultiUserChat.java
@@ -276,7 +276,7 @@ public class MultiUserChat {
                         }
                     }
 
-                    Destroy destroy = mucUser.getDestroy();
+                    Destroy destroy = mucUser == null ? null : mucUser.getDestroy();
                     // The room has been destroyed.
                     if (destroy != null) {
                         EntityBareJid alternateMucJid = destroy.getJid();