The second if statement should consider the original al register value,
and not the new one.
Signed-off-by: NBoris Figovsky <boris.figovksy@ravellosystems.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>