Do not set root twice when constructing ApplicationDataModel

Otherwise it will trigger two processes updates

processcore/application_data_model.cpp

@@ -25,10 +25,8 @@
 using namespace KSysGuard;
 
 ApplicationDataModel::ApplicationDataModel(QObject *parent)
-    : CGroupDataModel(parent)
+    : CGroupDataModel(QStringLiteral("/user.slice/user-%1.slice/user@%1.service").arg(KUserId::currentEffectiveUserId().toString()), parent)
 {
-    const QString userId = KUserId::currentEffectiveUserId().toString();
-    setRoot(QStringLiteral("/user.slice/user-%1.slice/user@%1.service").arg(userId));
 }
 
 bool ApplicationDataModel::filterAcceptsCGroup(const QString &id)

processcore/cgroup_data_model.cpp

@@ -93,6 +93,11 @@ public:
 };
 
 CGroupDataModel::CGroupDataModel(QObject *parent)
+    : CGroupDataModel(QStringLiteral("/"), parent)
+{
+}
+
+CGroupDataModel::CGroupDataModel(const QString &root, QObject *parent)
     : QAbstractItemModel(parent)
     , d(new CGroupDataModelPrivate)
 {
@@ -118,7 +123,7 @@ CGroupDataModel::CGroupDataModel(QObject *parent)
     d->m_updateTimer->setInterval(2000);
     d->m_updateTimer->start();
 
-    setRoot(QStringLiteral("/"));
+    setRoot(root);
 }
 
 CGroupDataModel::~CGroupDataModel()

processcore/cgroup_data_model.h

@@ -61,6 +61,7 @@ class Q_DECL_EXPORT CGroupDataModel : public QAbstractItemModel
 
 public:
     CGroupDataModel(QObject *parent = nullptr);
+    CGroupDataModel(const QString &root, QObject *parent = nullptr);
     ~CGroupDataModel();
 
     int rowCount(const QModelIndex &parent = QModelIndex()) const override;