OSV-2022-1061 Heap-buffer-overflow in AffixMgr::compound_check

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=52486 Crash type: Heap-buffer-overflow READ 1 Crash state: AffixMgr::compoundcheck HunspellImpl::checkword HunspellImpl::spellinternal...