This is what we are testing:

char * name_skip(char * cp) { int i;

  for(i=0;i<MAXDNAME;i++) {
    if ( ((u_char)*(cp + i)) == 0 )
      return((u_char *)(cp +i + 1));
    else if ( ((u_char)*(cp + i)) < 0xC0 )
      continue;
    else 
      return((u_char *)(cp +i + 2));
  }
/* ERROR, should not reach      */
  return(NULL);
}