Incorrect Object Identifier DER Encoding

[zhengyao-lin]

The encoding seems to be incorrect for certain object identifiers at the boundary of arc length. For example:

// decoded: 1.2.0
println!("decoded: {:?}",  ObjectIdentifier::from_der(&ObjectIdentifier::new_unwrap("1.2.128").to_der().unwrap()));

// decoded: 1.2.0.0
println!("decoded: {:?}",  ObjectIdentifier::from_der(&ObjectIdentifier::new_unwrap("1.2.16384").to_der().unwrap()));

I'm using this crate:

der = { version = "0.7.9", features = [ "alloc", "oid" ] }

[zhengyao-lin]

This also seems to fail for many 1.2.<n> with n >= 16384

For instance

// decoded: 1.2.0.4
println!("decoded: {:?}", ObjectIdentifier::from_der(ObjectIdentifier::new_unwrap("1.2.16385").to_der().unwrap()));

[tarcieri]

Reproduced. Thanks for the report.