pkg/dbusutil: simplify variable definition

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@huawei.com>

pkg/dbusutil/servicehost.go

@@ -169,7 +169,7 @@ type svcRegistration struct {
 
 // DBusConn returns the bus connection object.
 func (reg *svcRegistration) DBusConn() *dbus.Conn {
-	var sh *ServiceHost = reg.ServiceHost
+	var sh = reg.ServiceHost
 
 	return sh.conn
 }