Merge commit '0899e8bc9dc44249d6be016bed71a9ecee56f132' * commit '0899e8bc9dc44249d6be016bed71a9ecee56f132': Fix up handling of null fields in DownloadManager.
Merge commit '0899e8bc9dc44249d6be016bed71a9ecee56f132' * commit '0899e8bc9dc44249d6be016bed71a9ecee56f132': Fix up handling of null fields in DownloadManager.