QmlJS: Initialize QuickToolBar::m_editor.

Change-Id: I90f106affadb898b5eda613ad2a59bb3a5b53a2c
Reviewed-on: http://codereview.qt.nokia.com/1061

Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@nokia.com>

src/plugins/qmljseditor/quicktoolbar.cpp

@@ -92,7 +92,10 @@ static inline const Interpreter::ObjectValue * getPropertyChangesTarget(Node *no
     return 0;
 }
 
-QuickToolBar::QuickToolBar(QObject *parent) : ::QmlJS::IContextPane(parent), m_blockWriting(false)
+QuickToolBar::QuickToolBar(QObject *parent)
+    : ::QmlJS::IContextPane(parent)
+    , m_editor(0)
+    , m_blockWriting(false)
 {
     m_node = 0;
     contextWidget();