bugfix: do not populate shared dummy fields on parent sock (may be a SYN request_sock)

net/ipv4/tcp_minisocks.c

@@ -499,11 +499,6 @@ struct sock *tcp_create_openreq_child(const struct sock *sk,
     newtp->shared_seq = newtp->write_seq;
     newtp->shared_dummy_out = 0;
     newtp->shared_dummy_lsndtime = newtp->lsndtime;
-    tcp_sk(sk)->write_seq_dummy_start = 0;
-    tcp_sk(sk)->write_seq_dummy_end = 0;
-    tcp_sk(sk)->shared_seq = newtp->shared_seq;
-    tcp_sk(sk)->shared_dummy_out = newtp->shared_dummy_out;
-    tcp_sk(sk)->shared_dummy_lsndtime = newtp->lsndtime;
 #endif
 
 		newtp->rx_opt.saw_tstamp = 0;