mptcp: fix uninit-value in mptcp_incoming_options

Added initialization use_ack to mptcp_parse_option().

Reported-by: [email protected]
Signed-off-by: Edward Adam Davis <[email protected]>
Acked-by: Paolo Abeni <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: ea1davis

net/mptcp/options.c

@@ -108,6 +108,7 @@ static void mptcp_parse_option(const struct sk_buff *skb,
 			mp_opt->suboptions |= OPTION_MPTCP_DSS;
 			mp_opt->use_map = 1;
 			mp_opt->mpc_map = 1;
+			mp_opt->use_ack = 0;
 			mp_opt->data_len = get_unaligned_be16(ptr);
 			ptr += 2;
 		}