s3: Prevent closing of the reader for GCS
s3: Prevent closing of the reader for GCS

kurin/restic,restic/restic,ar-jan/restic,middelink/restic,kurin/restic,jayme-github/restic,jayme-github/restic,middelink/restic,restic/restic,ar-jan/restic,fawick/restic,fawick/restic