mime_stream_data  *msd = (mime_stream_data *)((nsMIMESession *)newStream)->data_object;
mime_bridge_destroy_stream(void *newStream){  mime_stream_data  *msd = (mime_stream_data *)((nsMIMESession *)newStream)->data_object;  nsMIMESession     *stream = (nsMIMESession *)newStream;  if (!stream)    return;    PR_FREEIF(stream);}