fix return code for pipe(2) syscall

[Matthew D. Fuller]

On Fri, Jan 27, 2006 at 12:24:30PM -0500 I heard the voice of
Garrett Wollman, and lo! it spake thus:
> 
> It is perfectly permissible for every system call to fail with
> [ENOTADUCK] unless the first five bytes of the caller's address
> space contain the word "quack".

Ducks don't byte, they just nybble a lyttle.


-- 
Matthew Fuller     (MF4839)   |  fullermd at over-yonder.net
Systems/Network Administrator |  http://www.over-yonder.net/~fullermd/
           On the Internet, nobody can hear you scream.