Function parse_interp_path 

fn parse_interp_path<'a>(
    elf_data: &'a [u8],
    phdrs: &[Elf64Phdr],
) -> Result<Option<&'a str>, &'static str>

Parses interp path.

Cheap sanity checks (p_filesz bounds, max length, in-file range) run first so we reject absurd or hostile .interp sections without paying the full scan / UTF-8 validation cost.