bug fix:#I64FWN【主要】【电源管理】未连接电源，登录提示系统进入低电量状态，实际电量90%

ukui-upower/batteryinfo/batteryinfo.cpp

@@ -30,6 +30,7 @@ BatteryInfo::BatteryInfo(QObject *parent)
     QString batteryPath = m_upower->getBatteryPath();
     m_iface = QSharedPointer<QDBusInterface>(
         new QDBusInterface(UPOWER_SERVICE, batteryPath, FREEDESKTOP_UPOWER, QDBusConnection::systemBus()));
+    m_percentage = Percentage();
     initBatteryInfo(m_bat1);
     showBatteryInfo();
     initConnect(batteryPath);