OSV-2023-276 Heap-use-after-free in aiScene::~aiScene

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=57656 Crash type: Heap-use-after-free READ 8 Crash state: aiScene::aiScene Assimp::BatchLoader::BatchLoader Assimp::LWSImporter::InternReadFile...