util/nvmutil swap(): ensure that no overflow occurs

it wouldn't occur, on the current logic, but i wasn't
comfortable having the starting point (on little endian)
being higher than the checked endpoint, in case of
possible integer overflow as a result of future
modifications.

this is therefore a pre-emptive bug fix, because it doesn't
yet fix a bug, but it prevents a bug from being introduced.

Signed-off-by: Leah Rowe <leah@libreboot.org>

0 files changed, 0 insertions, 0 deletions