[9fans] nil, and the danger of zero

[erik quanstrom <quanstro@quanstro.net>]

so, as it turns out, not all zeros do the same thing to the stack.....  pfffft.
at least it's a simple reason why venti won't run.

; diffy -c ../boot/local.c
/n/dump/2014/0403/sys/src/nix/boot/local.c:212,218 - ../boot/local.c:212,218
  				f[2] = "tcp!127.1!8000";
  			}
  			configloopback();
- 			run("/boot/venti", "-c", f[0], "-a", f[1], "-h", f[2], 0);
+ 			run("/boot/venti", "-c", f[0], "-a", f[1], "-h", f[2], nil);
  			/*
  			 * If the announce address is tcp!*!foo, then set
  			 * $venti to tcp!127.1!foo instead, which is actually dialable.
/n/dump/2014/0403/sys/src/nix/boot/local.c:233,239 - ../boot/local.c:233,239

  	/* start fossil */
  	print("fossil(%s)...", partition);
- 	run("/boot/fossil", "-f", partition, "-c", "srv -A fboot", "-c", "srv -p fscons", 0);
+ 	run("/boot/fossil", "-f", partition, "-c", "srv -A fboot", "-c", "srv -p fscons", nil);
  	fd = open("#s/fboot", ORDWR);
  	if(fd < 0){
  		print("open #s/fboot: %r\n");

- erik