OSV-2023-748 Segv on unknown address in dwg_encode

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=61795 Crash type: Segv on unknown address Crash state: dwgencode llvmfuzz.c...

OSV-2023-314 Heap-buffer-overflow in dwg_encode

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=57969 Crash type: Heap-buffer-overflow READ 8 Crash state: dwgencode llvmfuzz.c...