message: restore hasher creation in blob_storage
diff: @@ -83,13 +83,13 @@ impl BlobStorageService {
  Ok(config_handle)
  }
  - pub fn create_blob(&self, config_handle: i32, hasher : Sha256) -> Result<i32, CommonError> {
  + pub fn create_blob(&self, config_handle: i32) -> Result<i32, CommonError> {
  let blob_handle = sequence::get_next_id();
  let writer = self.writer_configs.try_borrow()?
  .get(&config_handle).ok_or(CommonError::InvalidStructure("Unknown BlobStorage Writer".to_owned()))?
  .create(blob_handle)?;
  - self.writer_blobs.try_borrow_mut()?.insert(blob_handle, (writer, hasher));
  + self.writer_blobs.try_borrow_mut()?.insert(blob_handle, (writer, Sha256::default()));
  Ok(blob_handle)
  }
  