sysctl warns6 cleanup

[Peter Schuller]

I'll re-examine sysctl after Chris' commit.

> There should be at least a check for the value of len, to ensure that
> it actually fits into an int.

Roger that.

[snip]

> Dont do this, please. Use a new variable or reuse sep, this are constant
> strings and should stay so.

Sorry; I got into my head that val was being passed to some destructive
function. Obviously I was dreaming.

[snip]

> Change oidfmt and sysctl_all to take the lenght as size_t instead.

Will do. My misstake was assuming sysctl_all accepted an int for a reason,
instead of checking if it made sense to just go ahead and change it.

-- 
/ Peter Schuller, InfiDyne Technologies HB

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