Filter: Fix reconfiguration of roa_check()

  case P('a','f'):

  case P('a','l'):

  case P('a','L'): ONEARG; break;

#if 0

  case P('R','C'):

    TWOARGS;

    /* Does not really make sense - ROA check resuls may change anyway */

    /* Does not really make sense - ROA check results may change anyway */

    if (strcmp(((struct f_inst_roa_check *) f1)->rtc->name,

	       ((struct f_inst_roa_check *) f2)->rtc->name))

      return 0;

    break;

#endif

  default:

    bug( "Unknown instruction %d in same (%c)", f1->code, f1->code & 0xff);

  }