QtNetwork: code tidies: use the 4-arg connect overload

The 3-arg connect is error-prone and makes the lifetime of the
connection unclear.

Amends dae24df07f

Change-Id: Iec1c2cb266fcaca1a1c407a6158cc8bbb282756b
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>

src/network/ssl/qsslserver.cpp

@@ -341,7 +341,7 @@ void QSslServerPrivate::initializeHandshakeProcess(QSslSocket *socket)
             });
     auto it = socketData.emplace(quintptr(socket), readyRead, destroyed, std::make_shared<QTimer>());
     it->timeoutTimer->setSingleShot(true);
-    it->timeoutTimer->callOnTimeout([this, socket]() { handleHandshakeTimedOut(socket); });
+    it->timeoutTimer->callOnTimeout(q, [this, socket]() { handleHandshakeTimedOut(socket); });
     it->timeoutTimer->setInterval(handshakeTimeout);
     it->timeoutTimer->start();
 }