Fix progress off-by-1
Fix progress off-by-1

bchapuis/restic,kurin/restic,restic/restic,ar-jan/restic,klauspost/restic,ar-jan/restic,episource/restic,byo/restic,ckemper67/restic,arithmetric/restic,restic/restic,pombredanne/restic,kurin/restic,fawick/restic,stuertz/restic,jayme-github/restic,byo/restic,intfrr/restic,middelink/restic,fawick/restic,stuertz/restic,middelink/restic,howeyc/restic,jayme-github/restic,mappu/restic