OSV-2023-222 Heap-buffer-overflow in hb_subset_plan_t::hb_subset_plan_t

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=57342 Crash type: Heap-buffer-overflow READ 2 Crash state: hbsubsetplant::hbsubsetplant hbsubsetplancreateorfail hbsubsetorfail...