Fixes a missed tty_kref_put which is caused the driver
to fail to unloading when rmmoded if the hso serial port
ever gets throttled. 
Signed-off-by: Denis Joseph Barrow <D.Barow@option.com>
---
Index: linux-2.6/drivers/net/usb/hso.c
===================================================================
--- linux-2.6.orig/drivers/net/usb/hso.c	2009-01-15 12:45:09.000000000 +0100
+++ linux-2.6/drivers/net/usb/hso.c	2009-01-15 12:46:18.000000000 +0100
@@ -2040,8 +2040,10 @@
 			serial->curr_rx_urb_offset;
 		D1("data to push to tty");
 		while (write_length_remaining) {
-			if (test_bit(TTY_THROTTLED, &tty->flags))
+			if (test_bit(TTY_THROTTLED, &tty->flags)) {
+				tty_kref_put(tty);
 				return -1;
+			}
 			curr_write_len =  tty_insert_flip_string
 				(tty, urb->transfer_buffer +
 				 serial->curr_rx_urb_offset,