[distcc] 3 minor tweaks

[Martin Pool]

On  2 Apr 2003, Wayne Davison <wayned at users.sourceforge.net> wrote:
> I'd suggest the following three minor tweaks:
> 
> - Removed prototype for dcc_trace_argv() (since it's a define now).
> 
> - Use "else while(0)" instead of "else {}" so that using the
>   dcc_trace_argv() define doesn't result in two C statements.
> 
> - Return the "ret" value in dcc_r_request_header() when it's non-0.

Thanks, merged.

-- 
Martin