From b86b2d3299bf3c99d87cd852099e7ec18a1cfb7b Mon Sep 17 00:00:00 2001
From: Zhenhua Zhang <zhenhua.zhang@intel.com>
Date: Tue, 6 Jul 2010 17:57:37 +0800
Subject: gatppp: Check ppp instance before unref it

---
 gatchat/gatppp.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gatchat/gatppp.c b/gatchat/gatppp.c
index 1d41ded6..d9b16270 100644
--- a/gatchat/gatppp.c
+++ b/gatchat/gatppp.c
@@ -446,6 +446,9 @@ void g_at_ppp_unref(GAtPPP *ppp)
 {
 	gboolean is_zero;
 
+	if (ppp == NULL)
+		return;
+
 	is_zero = g_atomic_int_dec_and_test(&ppp->ref_count);
 
 	if (is_zero == FALSE)
-- 
cgit v1.2.1