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, 3 insertions, 3 deletions

diff --git a/src/widgets/kernel/qlayoutengine_p.h b/src/widgets/kernel/qlayoutengine_p.h
index 812fa7cf3b..948c2424e6 100644
--- a/src/widgets/kernel/qlayoutengine_p.h
+++ b/src/widgets/kernel/qlayoutengine_p.h
@@ -105,9 +105,9 @@ Q_WIDGETS_EXPORT QSize qSmartMinSize(const QWidgetItem *i);
 Q_WIDGETS_EXPORT QSize qSmartMinSize(const QWidget *w);
 Q_WIDGETS_EXPORT QSize qSmartMaxSize(const QSize &sizeHint,
                                  const QSize &minSize, const QSize &maxSize,
-                                 const QSizePolicy &sizePolicy, Qt::Alignment align = 0);
-Q_WIDGETS_EXPORT QSize qSmartMaxSize(const QWidgetItem *i, Qt::Alignment align = 0);
-Q_WIDGETS_EXPORT QSize qSmartMaxSize(const QWidget *w, Qt::Alignment align = 0);
+                                 const QSizePolicy &sizePolicy, Qt::Alignment align = nullptr);
+Q_WIDGETS_EXPORT QSize qSmartMaxSize(const QWidgetItem *i, Qt::Alignment align = nullptr);
+Q_WIDGETS_EXPORT QSize qSmartMaxSize(const QWidget *w, Qt::Alignment align = nullptr);
 
 Q_WIDGETS_EXPORT int qSmartSpacing(const QLayout *layout, QStyle::PixelMetric pm);