grub4efi - graphicsmode command always says 'was already xxx'

[steve6375]

graphicsmode 0x101 graphicsmode 0x102

[steve6375]

still present in 2021-09-08 graphicsmode command always says 'Graphics mode number was already 0xnnn' no matter what mode it was already in

builtins.c

[yaya2007]

已经修正，见 #333 。