Staging: serqt_usb2: fixed blank line style warning in serqt_usb2.c

This is a patch to the serqt_usb2.c file that fixes the following
warning:
WARNING: Missing a blank line after declarations
Signed-off-by: Vincent Heuken <me@vincentheuken.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/serqt_usb2/serqt_usb2.c

@@ -257,6 +257,7 @@ static void process_modem_status(struct quatech_port *qt_port,
 static void process_rx_char(struct usb_serial_port *port, unsigned char data)
 {
 	struct urb *urb = port->read_urb;
+
 	if (urb->actual_length)
 		tty_insert_flip_char(&port->port, data, TTY_NORMAL);
 }