This update for htmldoc fixes the following issues:
- CVE-2019-19630: Fixed stack-based buffer overflow in the hd_strlcpy() function in string.c via a crafted HTML document (bsc#1158802).
- CVE-2021-20308: Fixed integer overflow in image_load_gif() (bsc#1184424).
- CVE-2022-0534: Fixed stack out-of-bounds read in gif_get_code() when opening a malicious GIF file results in a segmentation fault (bsc#1195758).