Fix compilation of the tst_qnetworkreply benchmark test with QT_NO_SSL.

preConnectEncrypted_data() is called by preConnect_data().

Change-Id: I9a3fad294d88e4cb4d2f6132cf7a87945373bb7d
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
Reviewed-by: Sérgio Martins <sergio.martins.qnx@kdab.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>