fix --dry-run and --stats coexistence, fixes #5415#5418

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

ThomasWaldmann:fix-dryrun-without-stats-1.1ThomasWaldmann/borg:fix-dryrun-without-stats-1.1Copy head branch name to clipboard