debuginfod: Remove always-false comparisons with LONG_MAX

[Mark Wielaard]

Hi Timm,

On Tue, 2021-03-02 at 09:30 +0100, Timm Bäder via Elfutils-devel wrote:
> If I understand the code correctly, these comparisons exist only for
> the
> curl_off_t cases, in which case dl and cl might be greater than
> LONG_MAX. However, in case they are declares as double values, this
> cannot be the case and the comparisons are unnecessary.

I asked on irc why we are doing this and it was suspected that it is
becuase long on 32 bit can be smaller than the download size (returned
in a double)

So the suggestion was to change that to
   (cl > (double) LONG_MAX ?  LONG_MAX : (long) cl);
instead

Cheers,

Mark