Fix uninitialized IORange
Make sure range is initialized in VolumeDataStoreIOManager::PrepareReadChunkImpl() -- this was causing problems for reading uncompressed VDSs from Azure (and probably other CSPs).
Make sure range is initialized in VolumeDataStoreIOManager::PrepareReadChunkImpl() -- this was causing problems for reading uncompressed VDSs from Azure (and probably other CSPs).