From 4f3626f9206b8a23637a3c36ec28db1e895850d4 Mon Sep 17 00:00:00 2001
From: Dan McGee <dan@archlinux.org>
Date: Wed, 31 Aug 2011 12:18:49 -0700
Subject: [PATCH] xt: only unset fields if m is non NULL

---
 tc/m_xt.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/tc/m_xt.c b/tc/m_xt.c
index 86e223bc..18666b3e 100644
--- a/tc/m_xt.c
+++ b/tc/m_xt.c
@@ -252,13 +252,15 @@ static int parse_ipt(struct action_util *a,int *argc_p,
 
 	optind = 0;
 	xtables_free_opts(1);
-	/* Clear flags if target will be used again */
-        m->tflags=0;
-        m->used=0;
-	/* Free allocated memory */
-        if (m->t)
-            free(m->t);
 
+	if (m) {
+		/* Clear flags if target will be used again */
+		m->tflags = 0;
+		m->used = 0;
+		/* Free allocated memory */
+		if (m->t)
+			free(m->t);
+	}
 
 	return 0;