Make mfiutil(8) more robust

[John Baldwin]

On Sunday, October 03, 2010 11:32:01 pm Garrett Cooper wrote:
> On Sun, Oct 3, 2010 at 8:30 PM, Garrett Cooper <yanegomi at gmail.com> wrote:
> >    As discussed offlist with some of the Yahoo! FreeBSD folks,
> > mfiutil catches errors, but doesn't communicate it back up to the
> > executing process. Examples follow...
> >    Before:

I think these are both fine.

-- 
John Baldwin