Function safe_app::ffi::crypto::enc_pub_key_free

#[no_mangle]
pub unsafe extern "C" fn enc_pub_key_free(
    app: *const App, 
    handle: EncryptPubKeyHandle, 
    user_data: *mut c_void, 
    o_cb: extern "C" fn(_: *mut c_void, _: FfiResult)
)

Free encryption key from memory

Callback parameters: user data, error code, secret encrypt key