Fix crash for double deleted items

Reviewed-by: kkoehne
(cherry picked from commit 05f43cd6ba5448e9ce9e8a02943305ec2c86f80a)

1 files changed, 8 insertions, 1 deletions

diff --git a/src/plugins/qmldesigner/components/formeditor/formeditorscene.cpp b/src/plugins/qmldesigner/components/formeditor/formeditorscene.cpp
index 267d2678f7..b02538e48a 100644
--- a/src/plugins/qmldesigner/components/formeditor/formeditorscene.cpp
+++ b/src/plugins/qmldesigner/components/formeditor/formeditorscene.cpp
@@ -367,7 +367,14 @@ void FormEditorScene::setPaintMode(PaintMode paintMode)
 
 void FormEditorScene::clearFormEditorItems()
 {
-    foreach (QGraphicsItem *item, items()) {
+    QList<QGraphicsItem*> itemList(items());
+
+    foreach (QGraphicsItem *item, itemList) {
+        if (qgraphicsitem_cast<FormEditorItem* >(item))
+            item->setParentItem(0);
+    }
+
+    foreach (QGraphicsItem *item, itemList) {
         if (qgraphicsitem_cast<FormEditorItem* >(item))
             delete item;
     }