check: Fix misleading message which printed errors instead of differences
check: Fix misleading message which printed errors instead of differences

See: https://forum.rclone.org/t/tons-of-data-corruption-after-rclone-copy-to-mega-can-rclone-correct-it/17017/7

ncw/rclone,ncw/rclone,ncw/rclone,ncw/rclone