yasshi2525/RushHour

Avoid deeply nested control flow statements.

Open

            if re, err := services.ConnectRailNode(o, from.(*entities.RailNode), to.(*entities.RailNode), sc.Scale); err != nil {
                c.Set(keyErr, err)
            } else {
                c.Set(keyOk, &connectResponse{re, re.Reverse})
            }