loader: Fix loader_brand = none

[manu]

Summary

Setting loader_brand to none in loader.conf now result in a lua error
as we try to get a non-existant table
Defines it

Fixes: bef6d85b6de5 ("lualoader: allow graphical bits to be disabled with loader_gfx")
Sponsored by: Beckhoff Automation GmbH & Co. KG

[kevans]

stand/lua/drawer.lua

478

I think the typo is really that this should have been ascii = rather than fb = -- the rest of drawbrand is designed to handle that. The fb entry can go away entirely, nad the above chunk isn't needed.

[manu]

Address @kevans comments

[manu]

stand/lua/drawer.lua

478

Indeed, fixed.

[kevans]

Excellent, thanks!