Fix active state of default implementation of QBluetoothServiceDiscoveryAgent

Task-number: QTBUG-35571
Change-Id: Iecb959ece30b2af7340c3dfa9bf4b08c4004da14
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>
Fix error state of default QBluetoothServiceDiscoveryAgent

Task-number: QTBUG-35571
Change-Id: I9f3ba17bac1559758dae3808310262c6356a91c2
Reviewed-by: Fabian Bumberger <fbumberger@rim.com>