use nullptr consistently (clang-tidy)

From now on we prefer nullptr instead of 0 to clarify cases where
we are assigning or testing a pointer rather than a numeric zero.

Also, replaced cases where 0 was passed as Qt::KeyboardModifiers
with Qt::NoModifier (clang-tidy replaced them with nullptr, which
waas wrong, so it was just as well to make the tests more readable
rather than to revert those lines).

Change-Id: I4735d35e4d9f42db5216862ce091429eadc6e65d
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/imports/layouts/qquickstacklayout.cpp b/src/imports/layouts/qquickstacklayout.cpp
index cf70856e14..0b51d79bef 100644
--- a/src/imports/layouts/qquickstacklayout.cpp
+++ b/src/imports/layouts/qquickstacklayout.cpp
@@ -213,7 +213,7 @@ QQuickItem *QQuickStackLayout::itemAt(int index) const
             return item;
         --index;
     }
-    return 0;
+    return nullptr;
 }
 
 int QQuickStackLayout::itemCount() const
@@ -320,7 +320,7 @@ void QQuickStackLayout::rearrange(const QSizeF &newSize)
 
 void QQuickStackLayout::collectItemSizeHints(QQuickItem *item, QSizeF *sizeHints)
 {
-    QQuickLayoutAttached *info = 0;
+    QQuickLayoutAttached *info = nullptr;
     QQuickLayout::effectiveSizeHints_helper(item, sizeHints, &info, true);
     if (!info)
         return;