[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

src/cpp/mod.rs

@@ -507,7 +507,9 @@ mod tests {
         let encoded_len = encoded.len();
 
         let mut decoded = vec![0u32; input.len()];
-        let decoded_slice = codec.decode32(&buf[1..1 + encoded_len], &mut decoded).unwrap();
+        let decoded_slice = codec
+            .decode32(&buf[1..1 + encoded_len], &mut decoded)
+            .unwrap();
         assert_eq!(decoded_slice, input.as_slice());
     }
 }