if (sk->sk_protinfo) kfree(sk->sk_protinfo); 
kfree(sk->sk_protinfo); 
static void sock_def_destruct(struct sock *sk){	if (sk->sk_protinfo)		kfree(sk->sk_protinfo);}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/a51482bde22f99c63fbbb57d5d46cc666384e379/sock.c/clean/net/core/sock.c