OSV-2023-717 Heap-buffer-overflow in bit_TV_to_utf8_codepage

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=61593 Crash type: Heap-buffer-overflow READ 1 Crash state: bitTVtoutf8codepage bitTVtoutf8 dwgdecodeLAYOUTprivate...