winrt: Fixed null ptr access in LE device discovery

For some devices DeviceInformation is null. These
cases should not lead to a crash so we just ignore
these devices.

Change-Id: I9f55b6931c9790b4bdfe217fd506229d2125b78b
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@qt.io>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/bluetooth/qbluetoothdevicediscoveryagent_winrt.cpp b/src/bluetooth/qbluetoothdevicediscoveryagent_winrt.cpp
index 7813bfdc..28d05ec1 100644
--- a/src/bluetooth/qbluetoothdevicediscoveryagent_winrt.cpp
+++ b/src/bluetooth/qbluetoothdevicediscoveryagent_winrt.cpp
@@ -436,6 +436,10 @@ HRESULT QWinRTBluetoothDeviceDiscoveryWorker::onBluetoothLEDeviceFound(ComPtr<IB
         ComPtr<IDeviceInformation> deviceInfo;
         hr = device2->get_DeviceInformation(&deviceInfo);
         Q_ASSERT_SUCCEEDED(hr);
+        if (!deviceInfo) {
+            qCDebug(QT_BT_WINRT) << "onBluetoothLEDeviceFound: Could not obtain device information";
+            return S_OK;
+        }
         ComPtr<IDeviceInformation2> deviceInfo2;
         hr = deviceInfo.As(&deviceInfo2);
         Q_ASSERT_SUCCEEDED(hr);