Function X509_STORE_CTX_get_get_issuer

pub unsafe extern "C" fn X509_STORE_CTX_get_get_issuer(
    ctx: *const x509_store_ctx_st,
) -> Option<unsafe extern "C" fn(_: *mut *mut x509_st, _: *mut x509_store_ctx_st, _: *mut x509_st) -> i32>