QmlDesigner.model: add sanity check and include fix

Only emit if the view is really attached.

Reviewed-by: Marco Bubke

src/plugins/qmldesigner/designercore/model/abstractview.cpp

@@ -370,7 +370,7 @@ void AbstractView::emitCustomNotification(const QString &identifier, const QList
 
 void AbstractView::emitInstancePropertyChange(const QList<QPair<ModelNode, QString> > &propertyList)
 {
-    if (model())
+    if (model() && nodeInstanceView() == this)
         model()->m_d->notifyInstancePropertyChange(propertyList);
 }
 

src/plugins/qmldesigner/designercore/model/qmltextgenerator.cpp

@@ -35,6 +35,7 @@
 #include "nodelistproperty.h"
 #include "qmltextgenerator.h"
 #include "variantproperty.h"
+#include <propertymetainfo.h>
 #include "model.h"
 
 using namespace QmlDesigner;