QNAM: Avoid compile error if QT_NO_SSL

Change-Id: Iff8a0893cc7aca172c5b3f207a359762b270ed76
Reviewed-by: Jesus Fernandez <jsfdez@gmail.com>

src/network/access/qnetworkaccessmanager.cpp

@@ -1776,6 +1776,8 @@ void QNetworkAccessManagerPrivate::_q_replyEncrypted(QNetworkReply *reply)
 #ifndef QT_NO_SSL
     Q_Q(QNetworkAccessManager);
     emit q->encrypted(reply);
+#else
+    Q_UNUSED(reply);
 #endif
 }