OSV-2023-556 Heap-buffer-overflow in xt_valid_enum_values

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=60514 Crash type: Heap-buffer-overflow READ 4 Crash state: xtvalidenumvalues xtvalidateimpl ddsixttypeaddtypeobj...