Fix a few memory leaks

ASAN: Fix leak in XWindowTasksModel

Summary:
Trace:
Direct leak of 24 byte(s) in 3 object(s) allocated from:
    #0 0x544cc0 in operator new(unsigned long) (/home/kfunk/devel/install/kf5/bin/plasmashell+0x544cc0)
    #1 0x7fe4f0e82df9 in TaskManager::XWindowTasksModel::Private::windowInfo(unsigned long long) /home/kfunk/devel/src/kf5/plasma-workspace/libtaskmanager/xwindowtasksmodel.cpp:419:25
    #2 0x7fe4f0e87e69 in TaskManager::XWindowTasksModel::data(QModelIndex const&, int) const /home/kfunk/devel/src/kf5/plasma-workspace/libtaskmanager/xwindowtasksmodel.cpp:646:38
    ...

ASAN: Fix leak in ShellCorona

Trace:
Indirect leak of 48 byte(s) in 1 object(s) allocated from:
    #0 0x544cc0 in operator new(unsigned long) (/home/kfunk/devel/install/kf5/bin/plasmashell+0x544cc0)
    #1 0x5e1a95 in ShellCorona::checkAddPanelAction(QStringList const&) /home/kfunk/devel/src/kf5/plasma-workspace/shell/shellcorona.cpp:1728:27
    #2 0x5dac7e in ShellCorona::ShellCorona(QObject*) /home/kfunk/devel/src/kf5/plasma-workspace/shell/shellcorona.cpp:180:5
    #3 0x65c31d in ShellManager::loadHandlers() /home/kfunk/devel/src/kf5/plasma-workspace/shell/shellmanager.cpp:93:21
    ...

Reviewers: davidedmundson

Reviewed By: davidedmundson

Subscribers: davidedmundson, plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D17032

shell/shellcorona.cpp

@@ -1709,8 +1709,7 @@ void ShellCorona::checkAddPanelAction(const QStringList &sycocaChanges)
     delete m_addPanelAction;
     m_addPanelAction = nullptr;
 
-    delete m_addPanelsMenu;
-    m_addPanelsMenu = nullptr;
+    m_addPanelsMenu.reset(nullptr);
 
     KPluginInfo::List panelContainmentPlugins = Plasma::PluginLoader::listContainmentsOfType(QStringLiteral("Panel"));
 
@@ -1725,12 +1724,12 @@ void ShellCorona::checkAddPanelAction(const QStringList &sycocaChanges)
         m_addPanelAction->setData(Plasma::Types::AddAction);
         connect(m_addPanelAction, SIGNAL(triggered(bool)), this, SLOT(addPanel()));
     } else if (!panelContainmentPlugins.isEmpty()) {
-        m_addPanelsMenu = new QMenu;
+        m_addPanelsMenu.reset(new QMenu);
         m_addPanelAction = m_addPanelsMenu->menuAction();
         m_addPanelAction->setText(i18n("Add Panel"));
         m_addPanelAction->setData(Plasma::Types::AddAction);
-        connect(m_addPanelsMenu, &QMenu::aboutToShow, this, &ShellCorona::populateAddPanelsMenu);
-        connect(m_addPanelsMenu, SIGNAL(triggered(QAction*)), this, SLOT(addPanel(QAction*)));
+        connect(m_addPanelsMenu.data(), &QMenu::aboutToShow, this, &ShellCorona::populateAddPanelsMenu);
+        connect(m_addPanelsMenu.data(), SIGNAL(triggered(QAction*)), this, SLOT(addPanel(QAction*)));
     }
 
     if (m_addPanelAction) {

shell/shellcorona.h

@@ -25,6 +25,7 @@
 
 #include "plasma/corona.h"
 
+#include <QScopedPointer>
 #include <QSet>
 #include <QTimer>
 #include <QDBusVariant>
@@ -238,7 +239,7 @@ private:
     QList<Plasma::Containment *> m_waitingPanels;
     QHash<QString, QString> m_activityContainmentPlugins;
     QAction *m_addPanelAction;
-    QMenu *m_addPanelsMenu;
+    QScopedPointer<QMenu> m_addPanelsMenu;
     KPackage::Package m_lookAndFeelPackage;
     QSet<QScreen*> m_redundantOutputs;
     KDeclarative::QmlObjectSharedEngine *m_interactiveConsole;