Fix some memory leaks

Found by Address Sanitizer.

Change-Id: I989da71e24d737e36a88b83a1f382ce2d67e3307
Reviewed-by: hjk <hjk@qt.io>

src/plugins/debugger/debuggermainwindow.cpp

@@ -131,6 +131,7 @@ class DebuggerMainWindowPrivate : public QObject
 {
 public:
     DebuggerMainWindowPrivate(DebuggerMainWindow *parent);
+    ~DebuggerMainWindowPrivate();
 
     void selectPerspective(Perspective *perspective);
     void depopulateCurrentPerspective();
@@ -256,6 +257,11 @@ DebuggerMainWindowPrivate::DebuggerMainWindowPrivate(DebuggerMainWindow *parent)
     });
 }
 
+DebuggerMainWindowPrivate::~DebuggerMainWindowPrivate()
+{
+    delete m_editorPlaceHolder;
+}
+
 DebuggerMainWindow::DebuggerMainWindow()
     : d(new DebuggerMainWindowPrivate(this))
 {

src/plugins/debugger/debuggerrunconfigurationaspect.cpp

@@ -220,6 +220,14 @@ DebuggerRunConfigurationAspect::DebuggerRunConfigurationAspect(Target *target)
     m_overrideStartupAspect->setLabelText(tr("Additional startup commands:"));
 }
 
+DebuggerRunConfigurationAspect::~DebuggerRunConfigurationAspect()
+{
+    delete m_cppAspect;
+    delete m_qmlAspect;
+    delete m_multiProcessAspect;
+    delete m_overrideStartupAspect;
+}
+
 void DebuggerRunConfigurationAspect::setUseQmlDebugger(bool value)
 {
     m_qmlAspect->setValue(value);

src/plugins/debugger/debuggerrunconfigurationaspect.h

@@ -42,6 +42,7 @@ class DEBUGGER_EXPORT DebuggerRunConfigurationAspect
 
 public:
     DebuggerRunConfigurationAspect(ProjectExplorer::Target *target);
+    ~DebuggerRunConfigurationAspect();
 
     void fromMap(const QVariantMap &map) override;
     void toMap(QVariantMap &map) const override;