Fix some insignificant memory leaks.

Reviewed-By: hjk

src/plugins/coreplugin/welcomemode.cpp

@@ -206,6 +206,7 @@ WelcomeMode::~WelcomeMode()
 {
     QSettings *settings = ICore::instance()->settings();
     settings->setValue("General/WelcomeTab", m_d->btnGrp->checkedId());
+    delete m_d->m_widget;
     delete m_d;
 }
 

src/plugins/debugger/debuggeractions.h

@@ -43,11 +43,10 @@ namespace Internal {
 class DebuggerSettings : public QObject
 {
     Q_OBJECT
-
 public:
     DebuggerSettings(QObject *parent = 0);
     ~DebuggerSettings();
-    
+
     void insertItem(int code, Core::Utils::SavedAction *item);
     Core::Utils::SavedAction *item(int code) const;
 

src/plugins/debugger/debuggerplugin.cpp

@@ -418,6 +418,7 @@ void DebuggerPlugin::shutdown()
         m_manager->shutdown();
 
     writeSettings();
+    delete DebuggerSettings::instance();
 
     //qDebug() << "DebuggerPlugin::~DebuggerPlugin";
     removeObject(m_debugMode);

src/plugins/fakevim/fakevimactions.h

@@ -66,7 +66,6 @@ class FakeVimSettings : public QObject
 public:
     FakeVimSettings();
     ~FakeVimSettings();
-    
     void insertItem(int code, Core::Utils::SavedAction *item,
         const QString &longname = QString(),
         const QString &shortname = QString());
@@ -77,7 +76,7 @@ public:
     void readSettings(QSettings *settings);
     void writeSettings(QSettings *settings);
 
-public:
+private:
     QHash<int, Core::Utils::SavedAction *> m_items; 
     QHash<QString, int> m_nameToCode; 
     QHash<int, QString> m_codeToName; 

src/plugins/fakevim/fakevimplugin.cpp

@@ -280,6 +280,7 @@ void FakeVimPluginPrivate::shutdown()
     delete m_fakeVimOptionsPage;
     m_fakeVimOptionsPage = 0;
     theFakeVimSettings()->writeSettings(Core::ICore::instance()->settings());
+    delete theFakeVimSettings();
 }
 
 bool FakeVimPluginPrivate::initialize()