moxa: dcd handling of CLOCAL is backwards

We should do hangup on dcd loss if CLOCAL is false not true.

Signed-off-by: Alan Cox <[e-mail]>
Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=49911
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/tty/moxa.c

···
         	p->DCDState = dcd;
         	spin_unlock_irqrestore(&p->port.lock, flags);
 		tty = tty_port_tty_get(&p->port);
-		if (tty && C_CLOCAL(tty) && !dcd)
+		if (tty && !C_CLOCAL(tty) && !dcd)
 			tty_hangup(tty);
 		tty_kref_put(tty);
 	}