message: fix recv_packet crash
diff: @@ -1547,7 +1547,7 @@ ssize_t Socket::recv_packet()
  goto _get_header_len;
  }
  - if ((size_t) buf_len >= buffer->size)
  + if ((size_t) buf_len > buffer->size)
  {
  if (swString_extend(buffer, buf_len) < 0)
  {
  