openjpeg: Fix malloc poison issue

openjpeg: Fix malloc poison issue

The malloc poison issue has been fixed upstream, this patch will thus only
be temporary.

Fixes the following autobuild issues

       sparc | http://autobuild.buildroot.net/results/c1b7a316ca2a4db49023f304dbc7fd5fed05bd9d
        bfin | http://autobuild.buildroot.net/results/031ece7a72e76a9155938cb283de859bd12a8171
         sh4 | http://autobuild.buildroot.net/results/88664451f71c12ccd94e874d408fbb680bea1695
      xtensa | http://autobuild.buildroot.net/results/fbede64a5a86d4868b6da0ab1275e75803235af0
     powerpc | http://autobuild.buildroot.net/results/6c641650509048039b18fbeb010dbca0f0fc5292
microblazeel | http://autobuild.buildroot.net/results/fa2d5272b2db73cbfa441ead9250157c5626ab15
    mips64el | http://autobuild.buildroot.net/results/fc96f6628f71e05d9a74e0e13e50178d29a2c495
         sh4 | http://autobuild.buildroot.net/results/a6d6a6dcb9b4fa250edaaf5935762c5820457b23
      x86_64 | http://autobuild.buildroot.net/results/47b4ca2cc661582d86830b9353a6c8af86e4ba35
         arc | http://autobuild.buildroot.net/results/08e2e4eca6c3dbde8116a649dbf46e52ded45d10
         arc | http://autobuild.buildroot.net/results/899fa044aab7ee28acfa71544f2105da4a5c97d5
         arm | http://autobuild.buildroot.net/results/6016f6885b21d6e8c6199a6833c7acce6210ecc6
         arm | http://autobuild.buildroot.net/results/adbb3c76497e89161535c711de98809a0fa168a7
        or1k | http://autobuild.buildroot.net/results/de3ef69a72d2c2082e202fbed702c53a51274fef
    mips64el | http://autobuild.buildroot.net/results/39b186b13001a810e0992b52321f1015b445d2fd
      x86_64 | http://autobuild.buildroot.net/results/22c6a29a1ded6aedf01adfdfcf26302248dba80c
         arm | http://autobuild.buildroot.net/results/b62c54b727eb5f576c4a517a69c495b537c3b69a
        m68k | http://autobuild.buildroot.net/results/a826561c5786be5f0088b50b633210593e23ffff
         arm | http://autobuild.buildroot.net/results/d32ec927a5e4d5644cb3641014bcf6ebe5c14490

Signed-off-by: Olivier Schonken <olivier.schonken@gmail.com>
Tested-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>