CVE-2026-96280: the OCI delta parser read sizes as guint64 and passed them
to gsize APIs, and delta_read_data() allocated size + 1 bytes, which wraps
to zero for size G_MAXSIZE; sizes are now gsize and clamped to G_MAXSIZE,
delta_read_data() rejects size G_MAXSIZE and delta paths longer than
PATH_MAX are rejected