message: `RepLog::commit` no longer returns a result
diff: @@ -121,11 +121,10 @@ impl RepLog {
  }
  /// applies the stored list of `Op`s to the provided `Storage`
  - pub fn commit<S: Storage>(self, storage: &mut S) -> StdResult<()> {
  + pub fn commit<S: Storage>(self, storage: &mut S) {
  for op in self.ops_log {
  op.apply(storage);
  }
  - Ok(())
  }
  }
  @@ -258,7 +257,7 @@ where
  {
  let mut stx = StorageTransaction::new(storage);
  let res = callback(&mut stx)?;
  - stx.prepare().commit(storage)?;
  + stx.prepare().commit(storage);
  Ok(res)
  }
  @@ -442,7 +441,7 @@ mod test {
  assert_eq!(check.get(b"food"), Some(b"bank".to_vec()));
  // now commit to base and query there
  - check.prepare().commit(&mut base).unwrap();
  + check.prepare().commit(&mut base);
  assert_eq!(base.get(b"foo"), None);
  assert_eq!(base.get(b"food"), Some(b"bank".to_vec()));
  }
  @@ -459,7 +458,7 @@ mod test {
  assert_eq!(check.get(b"food"), Some(b"bank".to_vec()));
  // now commit to base and query there
  - check.prepare().commit(&mut base).unwrap();
  + check.prepare().commit(&mut base);
  assert_eq!(base.get(b"foo"), None);
  assert_eq!(base.get(b"food"), Some(b"bank".to_vec()));
  }
  @@ -501,7 +500,7 @@ mod test {
  let mut check = StorageTransaction::new(&base);
  assert_eq!(check.get(b"foo"), Some(b"bar".to_vec()));
  check.set(b"subtx", b"works");
  - check.prepare().commit(&mut base).unwrap();
  + check.prepare().commit(&mut base);
  assert_eq!(base.get(b"subtx"), Some(b"works".to_vec()));
  }
  @@ -521,7 +520,7 @@ mod test {
  // Can still read from base, txn is not yet committed
  assert_eq!(base.get(b"subtx"), None);
  - stxn1.prepare().commit(&mut base).unwrap();
  + stxn1.prepare().commit(&mut base);
  assert_eq!(base.get(b"subtx"), Some(b"works".to_vec()));
  }
  