bug#1206: [BusyBox] bug#1206: head errors after successful completion with file argument

[Matt Kraai]

On Mon, Aug 06, 2001 at 09:52:07AM -0400, David Douthitt wrote:
> Try this command:
> 
> head -n 1 /etc/fstab
> 
> It will execute successfully, but end with an error, apparently
> incorrect:
> 
> # ./busybox head -n 1 /etc/fstab
> /dev/hda5               /                       ext2    defaults       
> 1 1
> head: /etc/fstab: Not a typewriter
> #

I don't see this error, but the cause is clear.  It is checking
errno directly, rather than calling ferror(3), to determine if
there was an error.  Shame on me for writing such crap.  Anyway,
this is another candidate fix for 0.60.1.

Matt