Function safe_app::ffi::immutable_data::idata_close_self_encryptor

#[no_mangle]
pub unsafe extern "C" fn idata_close_self_encryptor(
    app: *const App, 
    se_h: SEWriterHandle, 
    cipher_opt_h: CipherOptHandle, 
    published: bool, 
    user_data: *mut c_void, 
    o_cb: extern "C" fn(user_data: *mut c_void, result: *const FfiResult, name: *const XorNameArray)
)

Close Self Encryptor and free the Self Encryptor Writer handle.