Outbound service subscriptions not handled properly if more than one sink

[pierredelisle]

In WDMFeature.cpp, set outParam.mSubscribeRequestPrepareNeeded.mPathListSize to kSinkHandle_Max as shown below.

Otherwise, only the first subscription is registered.

Note that this is not an issue with the sample app currently because it only has one sink, but is an issue when additional sinks are added in applications that are cloned from this sample app.

void WDMFeature::HandleOutboundServiceSubscriptionEvent(
                                                        void * appState, 
                                                        SubscriptionClient::EventID eventType,
                                                        const SubscriptionClient::InEventParam & inParam,
                                                        SubscriptionClient::OutEventParam & outParam)
{
    switch (eventType)
    {
        case SubscriptionClient::kEvent_OnSubscribeRequestPrepareNeeded:
        {
            outParam.mSubscribeRequestPrepareNeeded.mPathList                  = &(sWDMfeature.mServiceSinkTraitPaths[0]);
 -->        outParam.mSubscribeRequestPrepareNeeded.mPathListSize              = 1;  // change this to kSinkHandle_Max
            outParam.mSubscribeRequestPrepareNeeded.mVersionedPathList         = NULL;
            outParam.mSubscribeRequestPrepareNeeded.mNeedAllEvents             = false;

I'll send a PR shortly.

[suryanshup]

This was fixed in an earlier PR.