Minor code improvement

LedgerHQ · Dec 29, 2023 · d2b5ce3 · d2b5ce3
1 parent 255663c
commit d2b5ce3
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/utils.rs b/src/utils.rs
@@ -40,9 +40,10 @@ impl<const S: usize> TryFrom<&[u8]> for Bip32Path<S> {
  ///
  /// * `data` - Encoded BIP32 path. First byte is the length of the path, as encoded by ragger.
  fn try_from(data: &[u8]) -> Result<Self, Self::Error> {
+ let input_path_len = (data.len() - 1) / 4;
  // Check data length
  if data.is_empty() // At least the length byte is required
- || ((data.len() - 1) / 4 > S)
+ || (input_path_len > S)
  || (data[0] as usize * 4 != data.len() - 1)
  {
  return Err(AppSW::WrongApduLength);
@@ -55,7 +56,7 @@ impl<const S: usize> TryFrom<&[u8]> for Bip32Path<S> {
 
  Ok(Self {
  buffer: path,
- len: (data.len() - 1) / 4,
+ len: input_path_len,
  })
  }
 }