[PATCH 1/3] Don't call qsort() over NULL

[Tim Wiederhake]

On Mon, 2021-06-14 at 13:06 +0200, Michal Privoznik wrote:
> In a few places it may happen that the array we want to sort is
> still NULL (e.g. because there were no leases found, no paths for
> secdriver to lock or no cache banks). However, passing NULL to
> qsort() is undefined and even though glibc plays nicely we
> shouldn't rely on undefined behaviour.
> 
> Signed-off-by: Michal Privoznik <mprivozn at redhat.com>

Reviewed-by: Tim Wiederhake <twiederh at redhat.com>