EncryptWriter: do not close underlying writer
EncryptWriter: do not close underlying writer

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