rem: if (h->cache_chain_heads) { free(h->cache_chain_heads); h->cache_chain_heads = NULL; h->cache_num_chains = 0; h->cache_chain_iteration = NULL; h->cache_rule_end = NULL; }
context: set_changed(TC_HANDLE_T h){	if (h->cache_chain_heads) {		free(h->cache_chain_heads);		h->cache_chain_heads = NULL;		h->cache_num_chains = 0;		h->cache_chain_iteration = NULL;		h->cache_rule_end = NULL;	}	h->changed = 1;}