[Bug] Dynamic data may cause decode_single to panic

[Philogy]

Component

dyn-abi

What version of Alloy are you on?

v0.2.0 commit ca37a23

Operating System

Linux

Describe the bug

Description

DynSolType::decode_single will panic when it encounters certain data.

Expected Behavior vs. Actual Behavior

Expected decode_single to result in a Result::Err(..) value if it's unable to decode given data, instead it panics bringing the whole program to a halt.

How to reproduce:

Run the following snippet

use alloy_dyn_abi::DynSolType;
use hex_literal::hex;
use std::string::String;

fn main() -> Result<(), String> {
    let my_type: DynSolType = "(string[],bytes13,bytes13[2])"
        .parse()
        .map_err(|err| format!("Failed to parse: {}", err))?;
    let decoded = my_type
        .decode_single(&hex!(
            "
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"
        ))
        .map_err(|err| format!("Failed to decode: {}", err));
    println!("decoded: {decoded:?}");

    Ok(())
}

It should result in the following panic:

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Overrun', /home/philippe/.cargo/git/checkouts/core-3f428e9ca4699f0e/ca37a23/crates/dyn-abi/src/token.rs:169:65
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Note the above data is valid and will be decoded successfully by decode_params and decode_sequence.

[prestwich]

Fixed in #172