Function olm_sys::olm_account_unpublished_fallback_key

pub unsafe extern "C" fn olm_account_unpublished_fallback_key(
    account: *mut OlmAccount, 
    fallback_key: *mut c_void, 
    fallback_key_size: usize
) -> usize

Returns the fallback key (if present, and if unpublished) into the fallback_key buffer