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, 2 insertions, 2 deletions

diff --git a/src/bluetooth/qbluetoothsocket.h b/src/bluetooth/qbluetoothsocket.h
index 5d686d7f..d5da783f 100644
--- a/src/bluetooth/qbluetoothsocket.h
+++ b/src/bluetooth/qbluetoothsocket.h
@@ -82,8 +82,8 @@ public:
     };
     Q_ENUM(SocketError)
 
-    explicit QBluetoothSocket(QBluetoothServiceInfo::Protocol socketType, QObject *parent = 0);   // create socket of type socketType
-    QBluetoothSocket(QObject *parent = 0);  // create a blank socket
+    explicit QBluetoothSocket(QBluetoothServiceInfo::Protocol socketType, QObject *parent = Q_NULLPTR);   // create socket of type socketType
+    explicit QBluetoothSocket(QObject *parent = Q_NULLPTR);  // create a blank socket
     virtual ~QBluetoothSocket();
 
     void abort();