[rear-devel] [rear/rear] 74c422: Update 300_format_usb_disk.sh

[Johannes Meixner]

  Branch: refs/heads/jsmeix-USB-BIOS-boot-partition
  Home:   https://github.com/rear/rear
  Commit: 74c4223ced414e58f47faedf7ddd0a5f32402a94
      https://github.com/rear/rear/commit/74c4223ced414e58f47faedf7ddd0a5f32402a94
  Author: Johannes Meixner <jsmeix at suse.com>
  Date:   2021-07-22 (Thu, 22 Jul 2021)

  Changed paths:
    M usr/share/rear/format/USB/default/300_format_usb_disk.sh

  Log Message:
  -----------
  Update 300_format_usb_disk.sh

Create filesystem on boot partition only if there is a boot partition