hashindex: fix new checks for big endian archs, fixes #9521#9524

ThomasWaldmann merged 1 commit intoborgbackup:1.1-maintborgbackup/borg:1.1-maintfrom

ThomasWaldmann:hashindex-fix-for-bigendian-1.1ThomasWaldmann/borg:hashindex-fix-for-bigendian-1.1Copy head branch name to clipboard