boot: Fix logic for boot menu display

Commit c61193d3 [boot: Extend `etc/show-boot-menu`...] changed the
logic surrounding the use of show_boot_menu incorrectly, leading the
boot menu to be skipped by default with no way to override. Correct
the logic error so that show_boot_menu works as documented.

Test: build/boot SeaBIOS, verify boot menu option shown by default.

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
1 file changed
tree: c5af202bff4d698d2e9a827b374a301ac3feef00
  1. .gitignore
  2. COPYING
  3. COPYING.LESSER
  4. Makefile
  5. README
  6. docs/
  7. scripts/
  8. src/
  9. vgasrc/