message: Fix runaway memory usage in the p2p
diff: @@ -1382,7 +1382,7 @@ namespace eosio {
  return;
  }
  } else {
  - conn->pending_message_buffer.add_space(message_length - bytes_in_buffer);
  + conn->pending_message_buffer.add_space(message_length + message_header_size - bytes_in_buffer);
  break;
  }
  }
  