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diff --git a/src/gui/itemviews/qtreeview.cpp b/src/gui/itemviews/qtreeview.cpp
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index 406e1f6..4691b17 100644
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--- a/src/gui/itemviews/qtreeview.cpp
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+++ b/src/gui/itemviews/qtreeview.cpp
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@@ -3223,7 +3223,7 @@ int QTreeViewPrivate::itemHeight(int item) const
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         return defaultItemHeight;
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     if (viewItems.isEmpty())
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         return 0;
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-    const QModelIndex &index = viewItems.at(item).index;
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+    QModelIndex index = viewItems.at(item).index;
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     int height = viewItems.at(item).height;
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     if (height <= 0 && index.isValid()) {
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         height = q_func()->indexRowSizeHint(index);