Error in non-interactive mode

[riban-bw]

Calling raspi-config nonint do_boot_rom E1 fails due to this block of code expecting an extra, undocumented parameter with value '0':

    if [ "$INTERACTIVE" = True ]; then
      whiptail --yesno "$EETYPE bootloader selected - will be loaded at next reboot.\n\nReset bootloader to default configuration?" 20 60 2
      DEFAULTS=$?
    else
      DEFAULTS=$2

Passing an extra parameter '0' makes this work. IMO this is a bug in the code rather than docs. Passing '0' has no meaning.