message: Attempt to fix the linux build
diff: @@ -95,10 +95,12 @@ public:
  chunk_collection->Append(chunk);
  free(buffer);
  }
  +
  auto types = chunk_collection->Types();
  plan = make_unique<LogicalChunkGet>(0, types, move(chunk_collection));
  len = 0;
  + (void)len;
  D_ASSERT(write(sockfd, &len, sizeof(idx_t)) == sizeof(idx_t));
  // close the socket
  close(sockfd);
  