package/openjpeg: fix CVE-2019-12973

In OpenJPEG 2.3.1, there is excessive iteration in the
opj_t1_encode_cblks function of openjp2/t1.c. Remote attackers could
leverage this vulnerability to cause a denial of service via a crafted
bmp file. This issue is similar to CVE-2018-6616.

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>