USB: opticon: remove redundant initialisation

Remove redundant zero-initialisation of outstanding-urbs field in
kzalloced struct.
Signed-off-by: NJohan Hovold <jhovold@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/serial/opticon.c

@@ -486,7 +486,6 @@ static int opticon_startup(struct usb_serial *serial)
 	spin_lock_init(&priv->lock);
 	priv->serial = serial;
 	priv->port = serial->port[0];
-	priv->outstanding_urbs = 0;	/* Init the outstanding urbs */
 
 	/* find our bulk endpoint */
 	intf = serial->interface->altsetting;