sscanf (line, "%d %s", &index, line);
sscanf (line, "%u %s", &index, line);
static int check_uidl (char *line, void *data){  int i, index;  CONTEXT *ctx = (CONTEXT *)data;  sscanf (line, "%d %s", &index, line);  for (i = 0; i < ctx->msgcount; i++)  {    if (!mutt_strcmp (ctx->hdrs[i]->data, line))    {      ctx->hdrs[i]->refno = index;      break;    }  }  return 0;}