More nullptr usage in headers

Diff generated by running clang-tidy's modernize-use-nullptr checker on
the CMake-based Qt version.

Skipping src/3rdparty, examples/, tests/

Change-Id: Ib182074e2e2fd52f63093f73b3e2e4c0cb7af188
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/widgets/itemviews/qcolumnviewgrip_p.h b/src/widgets/itemviews/qcolumnviewgrip_p.h
index 5eb8012204..4311edbeb4 100644
--- a/src/widgets/itemviews/qcolumnviewgrip_p.h
+++ b/src/widgets/itemviews/qcolumnviewgrip_p.h
@@ -68,12 +68,12 @@ Q_SIGNALS:
     void gripMoved(int offset);
 
 public:
-    explicit QColumnViewGrip(QWidget *parent = 0);
+    explicit QColumnViewGrip(QWidget *parent = nullptr);
     ~QColumnViewGrip();
     int moveGrip(int offset);
 
 protected:
-    QColumnViewGrip(QColumnViewGripPrivate &, QWidget *parent = 0, Qt::WindowFlags f = 0);
+    QColumnViewGrip(QColumnViewGripPrivate &, QWidget *parent = nullptr, Qt::WindowFlags f = nullptr);
     void paintEvent(QPaintEvent *event) override;
     void mouseDoubleClickEvent(QMouseEvent *event) override;
     void mouseMoveEvent(QMouseEvent *event) override;