message: small fix in checking nullable variable
diff: @@ -257,7 +257,7 @@ namespace Azure { namespace Storage { namespace Blobs {
  {
  i.IsCurrentVersion = false;
  }
  - if (i.BlobType == Models::BlobType::AppendBlob && !i.Details.IsSealed)
  + if (i.BlobType == Models::BlobType::AppendBlob && !i.Details.IsSealed.HasValue())
  {
  i.Details.IsSealed = false;
  }
  @@ -310,7 +310,7 @@ namespace Azure { namespace Storage { namespace Blobs {
  {
  i.IsCurrentVersion = false;
  }
  - if (i.BlobType == Models::BlobType::AppendBlob && !i.Details.IsSealed)
  + if (i.BlobType == Models::BlobType::AppendBlob && !i.Details.IsSealed.HasValue())
  {
  i.Details.IsSealed = false;
  }
  