contrib

Incorrect byte manipulations.

Change-Id: Id8c3f457b39f4b2b75613076d403359c4972a69d
Signed-off-by: Karl Palsson <karlp@tweak.net.au>
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/2448


Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>