gpac: fix build (#8752)
gpac: fix build (#8752)

Fixes: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=51111
google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz