Fix memory leak in welcome plugin and right hand side pane

src/plugins/help/centralwidget.cpp

@@ -220,7 +220,7 @@ void CentralWidget::setSource(const QUrl &url)
         qobject_cast<HelpViewer*>(tabWidget->widget(lastTabPage));
 
     if (!viewer && !lastViewer) {
-        viewer = new HelpViewer(helpEngine, this);
+        viewer = new HelpViewer(helpEngine, this, this);
         viewer->installEventFilter(this);
         lastTabPage = tabWidget->addTab(viewer, QString());
         tabWidget->setCurrentIndex(lastTabPage);
@@ -428,7 +428,7 @@ void CentralWidget::setGlobalActions(const QList<QAction*> &actions)
 
 void CentralWidget::setSourceInNewTab(const QUrl &url, int zoom)
 {
-    HelpViewer* viewer = new HelpViewer(helpEngine, this);
+    HelpViewer* viewer = new HelpViewer(helpEngine, this, this);
     viewer->installEventFilter(this);
     viewer->setZoom(zoom);
     viewer->setSource(url);
@@ -448,7 +448,7 @@ void CentralWidget::setSourceInNewTab(const QUrl &url, int zoom)
 
 HelpViewer *CentralWidget::newEmptyTab()
 {
-    HelpViewer* viewer = new HelpViewer(helpEngine, this);
+    HelpViewer* viewer = new HelpViewer(helpEngine, this, this);
     viewer->installEventFilter(this);
     viewer->setFocus(Qt::OtherFocusReason);
 #if defined(QT_NO_WEBKIT)

src/plugins/help/helpplugin.cpp

@@ -491,7 +491,7 @@ void HelpPlugin::createRightPaneSideBar()
     addAutoReleasedObject(new Core::BaseRightPaneWidget(m_rightPaneSideBar));
 
     rightPaneLayout->addWidget(w);
-    m_helpViewerForSideBar = new HelpViewer(m_helpEngine, 0);
+    m_helpViewerForSideBar = new HelpViewer(m_helpEngine, 0, m_rightPaneSideBar);
     Aggregation::Aggregate *agg = new Aggregation::Aggregate();
     agg->add(m_helpViewerForSideBar);
     agg->add(new HelpViewerFindSupport(m_helpViewerForSideBar));

src/plugins/projectexplorer/projectexplorer.cpp

@@ -207,6 +207,7 @@ ProjectExplorerPlugin::ProjectExplorerPlugin()
 ProjectExplorerPlugin::~ProjectExplorerPlugin()
 {
     removeObject(d->m_welcomePlugin);
+    delete d->m_welcomePlugin;
     removeObject(this);
     delete d;
 }

src/plugins/projectexplorer/projectwelcomepage.cpp

@@ -39,6 +39,11 @@ ProjectWelcomePage::ProjectWelcomePage()
 
 }
 
+ProjectWelcomePage::~ProjectWelcomePage()
+{
+
+}
+
 QWidget* ProjectWelcomePage::page()
 {
     return m_page;

src/plugins/projectexplorer/projectwelcomepage.h

@@ -42,6 +42,7 @@ class ProjectWelcomePage : public Utils::IWelcomePage
     Q_OBJECT
 public:
     ProjectWelcomePage();
+    ~ProjectWelcomePage();
 
     QWidget *page();
     QString title() const { return tr("Develop"); }

src/shared/help/helpviewer.cpp

@@ -230,14 +230,14 @@ bool HelpPage::acceptNavigationRequest(QWebFrame *,
     return false;
 }
 
-HelpViewer::HelpViewer(QHelpEngine *engine, Help::Internal::CentralWidget *parent)
+HelpViewer::HelpViewer(QHelpEngine *engine, Help::Internal::CentralWidget *central, QWidget *parent)
     : QWebView(parent)
     , helpEngine(engine)
-    , parentWidget(parent)
+    , parentWidget(central)
     , multiTabsAllowed(true)
     , loadFinished(false)
 {
-    setPage(new HelpPage(parent, helpEngine, this));
+    setPage(new HelpPage(central, helpEngine, this));
     settings()->setAttribute(QWebSettings::PluginsEnabled, false);
     settings()->setAttribute(QWebSettings::JavaEnabled, false);
 
@@ -245,7 +245,7 @@ HelpViewer::HelpViewer(QHelpEngine *engine, Help::Internal::CentralWidget *paren
 
     QAction* action = pageAction(QWebPage::OpenLinkInNewWindow);
     action->setText(tr("Open Link in New Tab"));
-    if (!parent) {
+    if (!central) {
         multiTabsAllowed = false;
         action->setVisible(false);
     }

src/shared/help/helpviewer.h

@@ -64,7 +64,7 @@ class HelpViewer : public QWebView
     Q_OBJECT
 
 public:
-    HelpViewer(QHelpEngine *helpEngine, Help::Internal::CentralWidget *parent);
+    HelpViewer(QHelpEngine *helpEngine, Help::Internal::CentralWidget *central, QWidget *parent);
     void setSource(const QUrl &url);
 
     inline QUrl source() const