Remove dependency on github.com/hashicorp/go-multierror

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

Author: AkihiroSuda

go.mod

@@ -3,15 +3,13 @@ module github.com/lima-vm/sshocker
 go 1.20
 
 require (
-	github.com/hashicorp/go-multierror v1.1.1
 	github.com/pkg/sftp v1.13.5
 	github.com/sirupsen/logrus v1.9.3
 	github.com/urfave/cli/v2 v2.25.7
 )
 
 require (
 	github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
-	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/kr/fs v0.1.0 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect

go.sum

@@ -3,11 +3,6 @@ github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46t
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
-github.com/hashicorp/errwrap v1.1.0 h1:OxrOeh75EUXMY8TBjag2fzXGZ40LB6IKw45YeGUDY2I=
-github.com/hashicorp/errwrap v1.1.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
-github.com/hashicorp/go-multierror v1.1.1 h1:H5DkEtf6CXdFp0N0Em5UCwQpXMWke8IA0+lD48awMYo=
-github.com/hashicorp/go-multierror v1.1.1/go.mod h1:iw975J/qwKPdAO1clOe2L8331t/9/fmwbPZ6JB6eMoM=
 github.com/kr/fs v0.1.0 h1:Jskdu9ieNAYnjxsi0LbQp1ulIKZV1LAFgK1tWhpZgl8=
 github.com/kr/fs v0.1.0/go.mod h1:FFnZGqtBN9Gxj7eW1uZ42v5BccTP0vu6NEaFoC2HwRg=
 github.com/pkg/sftp v1.13.5 h1:a3RLUqkyjYRtBTZJZ1VRrKbN3zhuPLlUc3sphVz81go=

pkg/util/util.go

@@ -1,9 +1,8 @@
 package util
 
 import (
+	"errors"
 	"io"
-
-	"github.com/hashicorp/go-multierror"
 )
 
 // RWC composes io.ReadCloser and io.WriteCloser into io.ReadWriteCloser
@@ -13,12 +12,15 @@ type RWC struct {
 }
 
 func (rwc *RWC) Close() error {
-	var merr *multierror.Error
+	var merr error
 	if err := rwc.ReadCloser.Close(); err != nil {
-		merr = multierror.Append(merr, err)
+		merr = errors.Join(merr, err)
 	}
 	if err := rwc.WriteCloser.Close(); err != nil {
-		merr = multierror.Append(merr, err)
+		merr = errors.Join(merr, err)
+	}
+	if merr != nil {
+		return merr
 	}
-	return merr.ErrorOrNil()
+	return nil
 }