kernel: silence some warnings
 [jmk] --rw-rw-r-- M 1084359 glenda sys 41693 Apr 18 07:29 sys/src/9/pc/ether2114x.c
	/n/sourcesdump/2006/0418/plan9/sys/src/9/pc/ether2114x.c:1692,1698 - 
	/n/sourcesdump/2006/0419/plan9/sys/src/9/pc/ether2114x.c:1692,1697
	  		switch(ctlr->id){
	  		default:
	  			break;
	- 
	  		case Pnic:			/* PNIC */
	  			/*
	  			 * Turn off the jabber timer.
 [jmk] --rw-rw-r-- M 1084359 glenda sys 55087 Apr 18 07:30 sys/src/9/pc/sd53c8xx.c
	/n/sourcesdump/2006/0418/plan9/sys/src/9/pc/sd53c8xx.c:1998,2022 - 
	/n/sourcesdump/2006/0419/plan9/sys/src/9/pc/sd53c8xx.c:1998,2025
	  static int
	  xfunc(Controller *c, enum na_external x, unsigned long *v)
	  {
	- 	switch (x)
	- 	{
	+ 	switch (x) {
	+ 	default:
	+ 		print("xfunc: can't find external %d\n", x);
	+ 		return 0;
	  	case X_scsi_id_buf:
	- 		*v = offsetof(Dsa, scsi_id_buf[0]); return 1;
	+ 		*v = offsetof(Dsa, scsi_id_buf[0]);
	+ 		break;
	  	case X_msg_out_buf:
	- 		*v = offsetof(Dsa, msg_out_buf); return 1;
	+ 		*v = offsetof(Dsa, msg_out_buf);
	+ 		break;
	  	case X_cmd_buf:
	- 		*v = offsetof(Dsa, cmd_buf); return 1;
	+ 		*v = offsetof(Dsa, cmd_buf);
	+ 		break;
	  	case X_data_buf:
	- 		*v = offsetof(Dsa, data_buf); return 1;
	+ 		*v = offsetof(Dsa, data_buf);
	+ 		break;
	  	case X_status_buf:
	- 		*v = offsetof(Dsa, status_buf); return 1;
	+ 		*v = offsetof(Dsa, status_buf);
	+ 		break;
	  	case X_dsa_head:
	- 		*v = DMASEG(&c->dsalist.head[0]); return 1;
	- 	case X_ssid_mask:
	- 		*v = SSIDMASK(c); return 1;
	- 	default:
	- 		print("xfunc: can't find external %d\n", x);
	- 		return 0;
	+ 		*v = DMASEG(&c->dsalist.head[0]);
	+ 		break;
	  	}
	  	return 1;
	  }