Ensure stateChanged signal connect matches disconnect

A change to the connect signal introduced a lambda function, rather than
calling stateChanged directly, so that the disconnect no longer matched
the connect. This potentially prevented the disconnect from being
applied correctly.

This change matches the connect and disconnect up again.

src/network/access/qnetworkaccessmanager.cpp

@@ -1616,11 +1616,8 @@ void QNetworkAccessManagerPrivate::createSession(const QNetworkConfiguration &co
     QObject::connect(networkSessionStrongRef.data(), SIGNAL(opened()), q, SIGNAL(networkSessionConnected()), Qt::QueuedConnection);
     //QueuedConnection is used to avoid deleting the networkSession inside its closed signal
     QObject::connect(networkSessionStrongRef.data(), SIGNAL(closed()), q, SLOT(_q_networkSessionClosed()), Qt::QueuedConnection);
-    QObject::connect(networkSessionStrongRef.data(), &QNetworkSession::stateChanged,
-                     q, [this](QNetworkSession::State s) {
-        qCDebug(lcNetworkAccess) << "QNAM: network session state changed:" << s;
-        _q_networkSessionStateChanged(s);
-    }, Qt::QueuedConnection);
+    QObject::connect(networkSessionStrongRef.data(), SIGNAL(stateChanged(QNetworkSession::State)),
+                     q, SLOT(_q_networkSessionStateChanged(QNetworkSession::State)), Qt::QueuedConnection);
     QObject::connect(networkSessionStrongRef.data(), SIGNAL(error(QNetworkSession::SessionError)),
                         q, SLOT(_q_networkSessionFailed(QNetworkSession::SessionError)));
 
@@ -1652,6 +1649,7 @@ void QNetworkAccessManagerPrivate::_q_networkSessionClosed()
 void QNetworkAccessManagerPrivate::_q_networkSessionStateChanged(QNetworkSession::State state)
 {
     Q_Q(QNetworkAccessManager);
+    qCDebug(lcNetworkAccess) << "QNAM: network session state changed:" << state;
 
     if ((state == QNetworkSession::Connecting) && (!getNetworkSession())) {
         qCWarning(lcNetworkAccess) << "QNAM: ignoring Connecting state received after the session closed";