Constant nc::types::SOCKWQ_ASYNC_NOSPACE

pub const SOCKWQ_ASYNC_NOSPACE: i32 = 0;

Historically, SOCKWQ_ASYNC_NOSPACE & SOCKWQ_ASYNC_WAITDATA were located in sock->flags, but moved into sk->sk_wq->flags to be RCU protected. Eventually all flags will be in sk->sk_wq->flags.