[PATCH] ui-refs.c: Simplify and inline cmp_age()

[Lukas Fleischer]

On Tue, 04 Feb 2014 at 20:27:56, Lukas Fleischer wrote:
> On Tue, 04 Feb 2014 at 20:26:32, Jason A. Donenfeld wrote:
> [...]
> > cmp_age(-1, 0) returns -1
> > 
> > 0 - -1 returns 1
> 
> Can the age ever be negative?

The age parameters can only contain copies of the committer_date or
tagger_date fields which are unsigned. So I guess the patch is fine.