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>

2 files changed, 2 insertions, 2 deletions

diff --git a/tools/qmleasing/segmentproperties.cpp b/tools/qmleasing/segmentproperties.cpp
index 01123d3e97..f37527f863 100644
--- a/tools/qmleasing/segmentproperties.cpp
+++ b/tools/qmleasing/segmentproperties.cpp
@@ -30,7 +30,7 @@
 #include "splineeditor.h"
 
 SegmentProperties::SegmentProperties(QWidget *parent) :
-    QWidget(parent), m_splineEditor(0), m_blockSignals(false)
+    QWidget(parent), m_splineEditor(nullptr), m_blockSignals(false)
 {
     QVBoxLayout *layout = new QVBoxLayout(this);
     layout->setMargin(0);
diff --git a/tools/qmleasing/splineeditor.cpp b/tools/qmleasing/splineeditor.cpp
index af5c519b04..2a6081903f 100644
--- a/tools/qmleasing/splineeditor.cpp
+++ b/tools/qmleasing/splineeditor.cpp
@@ -42,7 +42,7 @@ const int canvasHeight = 320;
 const int canvasMargin = 160;
 
 SplineEditor::SplineEditor(QWidget *parent) :
-    QWidget(parent), m_pointListWidget(0), m_block(false)
+    QWidget(parent), m_pointListWidget(nullptr), m_block(false)
 {
     setFixedSize(canvasWidth + canvasMargin * 2, canvasHeight + canvasMargin * 2);