Make public headers compile with -Wzero-as-null-pointer-constant

... or equivalent.

QtBase 5.6 headers already compile that way, so let the other
modules follow suit.

Task-number: QTBUG-45291
Change-Id: Ied526fb2d7adc3a68946d6843a6bd6f475ebf864
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/qml/qml/qqmlapplicationengine.h b/src/qml/qml/qqmlapplicationengine.h
index 84cb2625dc..3b91d6adfc 100644
--- a/src/qml/qml/qqmlapplicationengine.h
+++ b/src/qml/qml/qqmlapplicationengine.h
@@ -47,9 +47,9 @@ class Q_QML_EXPORT QQmlApplicationEngine : public QQmlEngine
 {
     Q_OBJECT
 public:
-    QQmlApplicationEngine(QObject *parent=0);
-    QQmlApplicationEngine(const QUrl &url, QObject *parent=0);
-    QQmlApplicationEngine(const QString &filePath, QObject *parent=0);
+    QQmlApplicationEngine(QObject *parent = Q_NULLPTR);
+    QQmlApplicationEngine(const QUrl &url, QObject *parent = Q_NULLPTR);
+    QQmlApplicationEngine(const QString &filePath, QObject *parent = Q_NULLPTR);
     ~QQmlApplicationEngine();
 
     QList<QObject*> rootObjects();