[PATCH 2 of 4] largefiles: remove confusing 'or None' from predicate

[Mads Kiilerich]

On 11/03/2014 02:40 AM, Martin von Zweigbergk wrote:
> I don't think matchfn is ever set to None anywhere else (and I have 
> been staring at matcher code for the last week), so that's probably 
> not the reason.

We have some occurences of 'matchfn = None' and we have several boolean 
checks on matchfns. But I doubt it makes any difference here.

/Mads