if (n && (NULL != n->pf)) 
if (n) 
static int u32_destroy_key(struct tcf_proto *tp, struct tc_u_knode *n){	tcf_unbind_filter(tp, &n->res);	tcf_exts_destroy(tp, &n->exts);	if (n->ht_down)		n->ht_down->refcnt--;#ifdef CONFIG_CLS_U32_PERF	if (n && (NULL != n->pf))		kfree(n->pf);#endif	kfree(n);	return 0;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/a51482bde22f99c63fbbb57d5d46cc666384e379/cls_u32.c/clean/net/sched/cls_u32.c