package/openjpeg: fix CVE-2020-15389

Fix CVE-2020-15389: jp2/opj_decompress.c in OpenJPEG through 2.3.1 has a
use-after-free that can be triggered if there is a mix of valid and
invalid files in a directory operated on by the decompressor. Triggering
a double-free may also be possible. This is related to calling
opj_image_destroy twice.

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>