xt: only unset fields if m is non NULL

4f3626f9 · Dan McGee · Stephen Hemminger · 9a230771 · 4f3626f9
Commit 4f3626f9 authored Aug 31, 2011 by Dan McGee Committed by Stephen Hemminger Aug 31, 2011
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Showing with 8 additions and 6 deletions

tc/m_xt.c tc/m_xt.c +8 -6

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--- 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;