[coreboot] [libpayload] fix curses drawing problem

[Uwe Hermann]

On Thu, Mar 27, 2008 at 03:34:50PM -0600, Jordan Crouse wrote:
> [libpayload] Work around sign-extending issue
> 
> somewhere characters are getting sign-extended, meaning that the
> attributes of the drawing chars ( >= 128) are wrong.  Cast the value 
> before sending it to vga.
> 
> Signed-off-by: Jordan Crouse <jordan.crouse at amd.com>

Acked-by: Uwe Hermann <uwe at hermann-uwe.de>

Tested in QEMU.

 
Uwe.
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