innfeed: Add "exit (0) ;" if config loading succeeded.

[Russ Allbery]

Sergey Babitch <vinny at babitch.com> writes:

> "innfeed -C" exit with code 1 anyway.
> For batch mode better exit with code 0 if config loaded successful.

Thanks, applied.

-- 
Russ Allbery (rra at stanford.edu)             <http://www.eyrie.org/~eagle/>