OSV-2022-864 Heap-buffer-overflow in SuggestMgr::badcharkey_utf

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=51102 Crash type: Heap-buffer-overflow READ 2 Crash state: SuggestMgr::badcharkeyutf SuggestMgr::suggest HunspellImpl::suggestinternal...