dell-wmi: Clean up hotkey table size check

Checking the table for a minimum size of 7 bytes makes no sense: any valid
hotkey table has a size that's a multiple of 4.

Clean this up: replace the hardcoded header length with a sizeof and
change the check to ignore an empty hotkey table.  The only behavior
change is that a 7-byte table (which is nonsensical) will now be
treated as absent instead of as valid but empty.

Reported-by: Jean Delvare <[email protected]>
Signed-off-by: Andy Lutomirski <[email protected]>
Acked-by: Pali Rohár <[email protected]>
Signed-off-by: Darren Hart <[email protected]>

0 files changed, 0 insertions, 0 deletions