OSV-2022-372 Heap-buffer-overflow in dwg_encode_VERTEX_2D

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=46994 Crash type: Heap-buffer-overflow READ 8 Crash state: dwgencodeVERTEX2D dwgencodeaddobject dwgencode...