From: Jonathan Rose <jrose@digium.com>
Date: Tue, 24 Jul 2012 20:57:34 +0000 (+0000)
Subject: Don't attempt free of NULL ptr in pbx.c handle_presencechange
X-Git-Tag: certified/1.8.11-cert6~3^2~4
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=699e4638637d936914936cf8e2804ba87d82fbb2;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/certified/branches/1.8.11@370464 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---

diff --git a/main/pbx.c b/main/pbx.c
index 9e3f5325be..82e848452c 100644
--- a/main/pbx.c
+++ b/main/pbx.c
@@ -4644,7 +4644,7 @@ 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;