From: Jonathan Rose <jrose@digium.com>
Date: Tue, 24 Jul 2012 21:30:21 +0000 (+0000)
Subject: Don't attempt free of NULL ptr in pbx.c handle_presencechange
X-Git-Tag: 11.0.0-beta1~66
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=729c91b312699048c48559000525ceeffe6fe80c;p=thirdparty%2Fasterisk.git

Don't attempt free of NULL ptr in pbx.c handle_presencechange

(closes issue AST-921)
Reported by: Guenther Kelleter
Patches:
    nullptr.patch uploaded by Guenther Kelleter (license 6372)



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@370466 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---

diff --git a/main/pbx.c b/main/pbx.c
index a1ed1b52d6..0e0c6f366a 100644
--- a/main/pbx.c
+++ b/main/pbx.c
@@ -4820,7 +4820,7 @@ static int handle_presencechange(void *datap)
 	res = 0;
 
 presencechange_cleanup:
-	ast_free(hint_app);
+	ast_ref(hint_app, -1);
 	ao2_ref(pc, -1);
 
 	return res;