return fa_head; 
return &li->falh; 
static inline struct list_head * get_fa_head(struct leaf *l, int plen){	struct list_head *fa_head = NULL;	struct leaf_info *li = find_leaf_info(&l->list, plen);	if (li)		fa_head = &li->falh;	return fa_head;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/91b9a277fc4d207249e459a455abf804ebb5499d/fib_trie.c/buggy/net/ipv4/fib_trie.c