More AFL crashes

[aschampion]

These are the crashes found by #40 reported in #39 but not fixed by #41.

remaining_failures.zip

[oyvindln]

Okay, been a bit busy lately, but I'll look into it when I have time if someone hasn't gotten to it.

[Shnatsel]

This is pretty cool, thanks for the fuzzing!

You might want to add these bugs to https://github.com/rust-fuzz/trophy-case 😉

[oyvindln]

Hmm, something is causing an extra copy of the last byte to end up in the compressed stream.