Tidy nullptr usage

Move away from using 0 as pointer literal.

Done using clang-tidy. This is not complete as
run-clang-tidy can't handle all of qtbase in one go.

Change-Id: I1076a21f32aac0dab078af6f175f7508145eece0
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/corelib/statemachine/qabstractstate.cpp b/src/corelib/statemachine/qabstractstate.cpp
index 0db44bc427..10f54c3e18 100644
--- a/src/corelib/statemachine/qabstractstate.cpp
+++ b/src/corelib/statemachine/qabstractstate.cpp
@@ -84,19 +84,19 @@ QT_BEGIN_NAMESPACE
 
 
 QAbstractStatePrivate::QAbstractStatePrivate(StateType type)
-    : stateType(type), isMachine(false), active(false), parentState(0)
+    : stateType(type), isMachine(false), active(false), parentState(nullptr)
 {
 }
 
 QStateMachine *QAbstractStatePrivate::machine() const
 {
     QObject *par = parent;
-    while (par != 0) {
+    while (par != nullptr) {
         if (QStateMachine *mach = qobject_cast<QStateMachine*>(par))
             return mach;
         par = par->parent();
     }
-    return 0;
+    return nullptr;
 }
 
 void QAbstractStatePrivate::callOnEntry(QEvent *e)