Segmentation fault in function ngx_ssl_ja4

[Kristiks00]

Function strlen(c->ssl->ciphers[i]) sends Segmentation fault signal, trying get len from unsigned char (there isn't null terminator).
Also the module isn't compiled with flag -Werror. There are some functions, which use c->ssl->ciphers and c->ssl->extensions like char *, but they have type unsigned short *.