staging: ozwpan: Fixes crash due to invalid port aceess.

This patch fixes kernel crash issue, when we receive URB request
after de-enumerating device.

Signed-off-by: Rupesh Gujare <rupesh.gujare@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed