OSV-2021-1143 UNKNOWN WRITE in QtPrivate::QPodArrayOps<QPainterPath::Element>::copyAppend

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=37306 This is the same issue as OSV-2021-1121 which it replaced after that one was closed wrongly. Crash type: UNKNOWN WRITE Crash state: QtPrivate::QPodArrayOps::copyAppend QtPrivate::QCommonArrayOps::growAppend QList::append...