Add explicit and 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.

Added explicit where it was missing. This is not a source-
incompatible change, because code that breaks by this is
a bug. Let's not have this sitting around in an LTS.

Task-number: QTBUG-45291
Change-Id: I375361699615d0fc874e0b96a84543e233eff5f0
Reviewed-by: Frederik Gladhorn <frederik.gladhorn@theqtcompany.com>

1 files changed, 4 insertions, 5 deletions

diff --git a/src/bluetooth/qlowenergycontroller.h b/src/bluetooth/qlowenergycontroller.h
index be729dda..27e88ded 100644
--- a/src/bluetooth/qlowenergycontroller.h
+++ b/src/bluetooth/qlowenergycontroller.h
@@ -74,12 +74,12 @@ public:
     Q_ENUM(RemoteAddressType)
 
     explicit QLowEnergyController(const QBluetoothAddress &remoteDevice,
-                                     QObject *parent = 0); // TODO Qt 6 remove ctor
+                                  QObject *parent = Q_NULLPTR); // TODO Qt 6 remove ctor
     explicit QLowEnergyController(const QBluetoothDeviceInfo &remoteDevice,
-                                     QObject *parent = 0);
+                                  QObject *parent = Q_NULLPTR);
     explicit QLowEnergyController(const QBluetoothAddress &remoteDevice,
                                      const QBluetoothAddress &localDevice,
-                                     QObject *parent = 0); // TODO Qt 6 remove ctor
+                                  QObject *parent = Q_NULLPTR); // TODO Qt 6 remove ctor
     ~QLowEnergyController();
 
     QBluetoothAddress localAddress() const;
@@ -97,8 +97,7 @@ public:
 
     void discoverServices();
     QList<QBluetoothUuid> services() const;
-    QLowEnergyService *createServiceObject(
-            const QBluetoothUuid &service, QObject *parent = 0);
+    QLowEnergyService *createServiceObject(const QBluetoothUuid &service, QObject *parent = Q_NULLPTR);
 
     Error error() const;
     QString errorString() const;