[LTP] [PATCH 2/2] tools/sparse: Allow null pointer subtraction

[Petr Vorel]

Hi Richie,

Reviewed-by: Petr Vorel <pvorel@suse.cz>

Fortunately we can workaround the issue with compiler flag.
Hopefully we never need to fork remote repo due need to add a patch to source
code.

Kind regards,
Petr