Bug#1018775: fix is in 1.13.0

[Xavier Brochard <xavier@alternatif.org>]

I believe that this is now fixed in libheif 1.13.0 which is soon to be 
released (version number was increased yesterday, see
https://github.com/strukturag/libheif/commit/f3f71c8d67ca3265b76c782e48eb6fc68950a0a6).

--
Librement,
Xavier Brochard xavier@alternatif.org
La liberté est à l'homme ce que les ailes sont à l'oiseau
(Jean-Pierre Rosnay)