fstype </dev/ramzswap0 writes "stdin: error 0" to stderr

[Lauritz Thaulow]

To reproduce:

  fstype </dev/ramzswap0

1) Ubuntu 10.10

2) klibc-utils 1.5.20-1

3) expected output somewhat like this to stdout:

  FSTYPE=ramzswap
  FSSIZE=123456

4) Instead, it prints nothing to stdout and this to stderr:

  stdin: error 0

The bug was discovered while trying to find out why casper printed these error messages to console even during quiet boot, so fixing this will fix that annoyance as well.