[BUG] tcg2 measurement fails(0x800000000000000e) if BootOrder not defined

[Heinrich Schuchardt]

Hello Masahisa,

The UEFI specification does not require that BootOrder is defined.
Instead /EFI/BOOT/BOOT<ARCH>.EFI will be booted if not BootOrder is defined.

Currently tcg2 measurement fails with EFI_NOT_FOUND in this case.

Please, correct tcg2_measure_boot_variable() to correctly handle booting
without BootOrder.

Best regards

Heinrich