OSV-2023-420 Heap-use-after-free in fragment_addresses_equal

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=59173 Crash type: Heap-use-after-free READ 6 Crash state: fragmentaddressesequal ghashtablelookupextended fragmentaddseqsinglework...