revert quote/unquote method extraction

internal/restic/node.go

@@ -340,14 +340,6 @@ func FixTime(t time.Time) time.Time {
 	}
 }
 
-func quote(str string) string {
-	if str == "" {
-		return str
-	}
-	quoted := strconv.Quote(str)
-	return quoted[1 : len(quoted)-1]
-}
-
 func (node Node) MarshalJSON() ([]byte, error) {
 	// make sure invalid timestamps for mtime and atime are converted to
 	// something we can actually save.
@@ -357,7 +349,8 @@ func (node Node) MarshalJSON() ([]byte, error) {
 
 	type nodeJSON Node
 	nj := nodeJSON(node)
-	nj.Name = quote(node.Name)
+	name := strconv.Quote(node.Name)
+	nj.Name = name[1 : len(name)-1]
 	if nj.LinkTargetRaw != nil {
 		panic("LinkTargetRaw must not be set manually")
 	}
@@ -369,10 +362,6 @@ func (node Node) MarshalJSON() ([]byte, error) {
 	return json.Marshal(nj)
 }
 
-func unquote(str string) (string, error) {
-	return strconv.Unquote(`"` + str + `"`)
-}
-
 func (node *Node) UnmarshalJSON(data []byte) error {
 	type nodeJSON Node
 	nj := (*nodeJSON)(node)
@@ -382,9 +371,9 @@ func (node *Node) UnmarshalJSON(data []byte) error {
 		return errors.Wrap(err, "Unmarshal")
 	}
 
-	nj.Name, err = unquote(nj.Name)
+	nj.Name, err = strconv.Unquote(`"` + nj.Name + `"`)
 	if err != nil {
-		return errors.Wrap(err, "UnquoteName")
+		return errors.Wrap(err, "Unquote")
 	}
 	if nj.LinkTargetRaw != nil {
 		nj.LinkTarget = string(nj.LinkTargetRaw)