message: Fix compilation warning.
diff: @@ -83,7 +83,7 @@ pub fn store_tails_from_generator(service: Rc<BlobStorageService>,
  let version = vec![0u8, TAILS_BLOB_TAG_SZ];
  hasher.process(version.as_slice());
  - service.append(blob_handle, version.as_slice());
  + service.append(blob_handle, version.as_slice())?;
  while let Some(tail) = rtg.next()? {
  let tail_bytes = tail.to_bytes()?;
  