Fix code for newer minio-go
Fix code for newer minio-go

restic/restic,kurin/restic,byo/restic,jayme-github/restic,byo/restic,ar-jan/restic,middelink/restic,restic/restic,ckemper67/restic,stuertz/restic,jayme-github/restic,ar-jan/restic,fawick/restic,kurin/restic,middelink/restic,arithmetric/restic,fawick/restic,stuertz/restic