QIdentityProxyModel: add missing default value, compared to base class.

Change-Id: I8e3ff4923834c87a0a8d289e5445346a87542a80
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/corelib/itemmodels/qidentityproxymodel.h b/src/corelib/itemmodels/qidentityproxymodel.h
index 7eaa1f4e04..0805770aa8 100644
--- a/src/corelib/itemmodels/qidentityproxymodel.h
+++ b/src/corelib/itemmodels/qidentityproxymodel.h
@@ -57,7 +57,7 @@ public:
     QModelIndex mapToSource(const QModelIndex& proxyIndex) const;
     QModelIndex parent(const QModelIndex& child) const;
     int rowCount(const QModelIndex& parent = QModelIndex()) const;
-    QVariant headerData(int section, Qt::Orientation orientation, int role) const;
+    QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
     bool dropMimeData(const QMimeData* data, Qt::DropAction action, int row, int column, const QModelIndex& parent);
     QModelIndex sibling(int row, int column, const QModelIndex &idx) const;