message: Fix clippy::map_clone
diff: @@ -2809,7 +2809,7 @@ impl BigInt {
  #[inline]
  pub fn to_signed_bytes_be(&self) -> Vec<u8> {
  let mut bytes = self.data.to_bytes_be();
  - let first_byte = bytes.first().map(|v| *v).unwrap_or(0);
  + let first_byte = bytes.first().cloned().unwrap_or(0);
  if first_byte > 0x7f
  && !(first_byte == 0x80
  && bytes.iter().skip(1).all(Zero::is_zero)
  @@ -2837,7 +2837,7 @@ impl BigInt {
  #[inline]
  pub fn to_signed_bytes_le(&self) -> Vec<u8> {
  let mut bytes = self.data.to_bytes_le();
  - let last_byte = bytes.last().map(|v| *v).unwrap_or(0);
  + let last_byte = bytes.last().cloned().unwrap_or(0);
  if last_byte > 0x7f
  && !(last_byte == 0x80
  && bytes.iter().rev().skip(1).all(Zero::is_zero)
  