OSV-2020-1325 Global-buffer-overflow in BEInt<unsigned short, 2>::operator unsigned short

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21769 Crash type: Global-buffer-overflow READ 2 Crash state: BEInt::operator unsigned short OT::IntType::operator unsigned int CFF::Charset0::getglyph...