Function nginx::EVP_CIPHER_meth_set_init

pub unsafe extern "C" fn EVP_CIPHER_meth_set_init(
    cipher: *mut EVP_CIPHER, 
    init: Option<unsafe extern "C" fn(ctx: *mut EVP_CIPHER_CTX, key: *const c_uchar, iv: *const c_uchar, enc: c_int) -> c_int>
) -> c_int