Improve visit_seq implementation

Author: sgued

src/bytearray.rs

@@ -181,22 +181,16 @@ impl<'de, const N: usize> Visitor<'de> for ByteArrayVisitor<N> {
         write!(formatter, "a byte array of length {}", N)
     }
 
-    fn visit_seq<V>(self, mut visitor: V) -> Result<ByteArray<N>, V::Error>
+    fn visit_seq<V>(self, mut seq: V) -> Result<ByteArray<N>, V::Error>
     where
         V: SeqAccess<'de>,
     {
         let mut bytes = [0; N];
-        let mut idx = 0;
-        while let Some(b) = visitor.next_element()? {
-            bytes[idx] = b;
-            idx += 1;
-            if idx == N {
-                break;
-            }
-        }
 
-        if idx != N {
-            return Err(V::Error::invalid_length(N, &self));
+        for (idx, byte) in bytes.iter_mut().enumerate() {
+            *byte = seq
+                .next_element()?
+                .ok_or_else(|| V::Error::invalid_length(idx, &self))?;
         }
 
         Ok(ByteArray::from(bytes))