Code for setting the TCP_NODELAY option is wrong

[rfalke]

The code in the current master is:

	if(setsockopt(new_sock, IPPROTO_TCP, TCP_NODELAY, &flag, sizeof(int) != 0)){
		log__printf(NULL, MOSQ_LOG_WARNING, "Warning: Unable to set TCP_NODELAY.");
	}

But the parentheses are set wrong which results in a call setsockopt(..., 1) which the kernel answers with EINVAL.

[ralight]

Thank you! That's now fixed in the fixes branch.