updating github.com/godbus/dbus to v4.1.0+incompatible

vendor/github.com/godbus/dbus/conn_other.go

@@ -5,23 +5,38 @@ package dbus
 import (
 	"bytes"
 	"errors"
+	"fmt"
+	"os"
 	"os/exec"
 )
 
-func sessionBusPlatform() (*Conn, error) {
+const defaultSystemBusAddress = "unix:path=/var/run/dbus/system_bus_socket"
+
+func getSessionBusPlatformAddress() (string, error) {
 	cmd := exec.Command("dbus-launch")
 	b, err := cmd.CombinedOutput()
 
 	if err != nil {
-		return nil, err
+		return "", err
 	}
 
 	i := bytes.IndexByte(b, '=')
 	j := bytes.IndexByte(b, '\n')
 
 	if i == -1 || j == -1 {
-		return nil, errors.New("dbus: couldn't determine address of session bus")
+		return "", errors.New("dbus: couldn't determine address of session bus")
 	}
 
-	return Dial(string(b[i+1 : j]))
+	env, addr := string(b[0:i]), string(b[i+1:j])
+	os.Setenv(env, addr)
+
+	return addr, nil
+}
+
+func getSystemBusPlatformAddress() string {
+	address := os.Getenv("DBUS_SYSTEM_BUS_ADDRESS")
+	if address != "" {
+		return fmt.Sprintf("unix:path=%s", address)
+	}
+	return defaultSystemBusAddress
 }