From 15d1a39c034f32de5197c1c376cf25e49572f783 Mon Sep 17 00:00:00 2001
From: Danmei Chen <danmei.chen@belledonne-communications.com>
Date: Mon, 18 May 2020 17:16:36 +0200
Subject: [PATCH] fix crash onPresenceChanged

---
 Classes/Utils/FastAddressBook.m | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Classes/Utils/FastAddressBook.m b/Classes/Utils/FastAddressBook.m
index b6b8af7da..797a52284 100644
--- a/Classes/Utils/FastAddressBook.m
+++ b/Classes/Utils/FastAddressBook.m
@@ -602,6 +602,9 @@
 		if (displayName == nil) return;
 
 		const LinphonePresenceModel *m = [[k.userInfo valueForKey:@"presence_model"] pointerValue];
+		if (!linphone_presence_model_get_contact(m)) {
+			return;
+		}
 		NSString *contact = [NSString stringWithUTF8String:linphone_presence_model_get_contact(m)];
 		NSString *sipAddr = [FastAddressBook normalizeSipURI:contact];