serde: Update base64.rs with a comment
Some minimal comment after
@@ -9,6 +9,7 @@ pub struct Base64<B = Vec<u8>> {
bytes: B,
}
+// See https://github.com/matrix-org/matrix-doc/issues/3211
const BASE64_CONFIG: base64::Config = base64::STANDARD_NO_PAD.decode_allow_trailing_bits(true);
impl<B: AsRef<[u8]>> Base64<B> {
