message: Tweaks to debug output and function names
diff: @@ -67,7 +67,7 @@ impl fmt::Debug for Memo {
  fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
  write!(f, "Memo(")?;
  match self.to_utf8() {
  - Some(Ok(memo)) => write!(f, "{}", memo)?,
  + Some(Ok(memo)) => write!(f, "\"{}\"", memo)?,
  _ => fmt_colon_delimited_hex(f, &self.0[..])?,
  }
  write!(f, ")")
  @@ -347,7 +347,7 @@ impl SaplingNoteEncryption {
  }
  }
  -fn parse_note_plaintext_minus_memo(
  +fn parse_note_plaintext_without_memo(
  ivk: &Fs,
  cmu: &Fr,
  plaintext: &[u8],
  @@ -409,7 +409,7 @@ pub fn try_sapling_note_decryption(
  NOTE_PLAINTEXT_SIZE
  );
  - let (note, to) = parse_note_plaintext_minus_memo(ivk, cmu, &plaintext)?;
  + let (note, to) = parse_note_plaintext_without_memo(ivk, cmu, &plaintext)?;
  let mut memo = [0u8; 512];
  memo.copy_from_slice(&plaintext[COMPACT_NOTE_SIZE..NOTE_PLAINTEXT_SIZE]);
  @@ -454,7 +454,7 @@ pub fn try_sapling_compact_note_decryption(
  CHACHA20_BLOCK_SIZE + COMPACT_NOTE_SIZE
  );
  - parse_note_plaintext_minus_memo(ivk, cmu, &plaintext[CHACHA20_BLOCK_SIZE..])
  + parse_note_plaintext_without_memo(ivk, cmu, &plaintext[CHACHA20_BLOCK_SIZE..])
  }
  /// Recovery of the full note plaintext by the sender.
  