[service] Fix windows permissions

base/dataroot/root.go

@@ -2,7 +2,6 @@ package dataroot
 
 import (
 	"errors"
-	"os"
 
 	"github.com/safing/portmaster/base/utils"
 )
@@ -10,7 +9,7 @@ import (
 var root *utils.DirStructure
 
 // Initialize initializes the data root directory.
-func Initialize(rootDir string, perm os.FileMode) error {
+func Initialize(rootDir string, perm utils.FSPermission) error {
 	if root != nil {
 		return errors.New("already initialized")
 	}