Audit miniz_oxide

https://crates.io/crates/miniz_oxide

DEFLATE encoder/decoder. 5000 downloads/day, plenty of unsafe blocks, exposed to untrusted data from the network through `reqwest` :scream: 

Tracking issues on `miniz_oxide` side: 
https://github.com/Frommi/miniz_oxide/issues/16
https://github.com/Frommi/miniz_oxide/issues/52
https://github.com/Frommi/miniz_oxide/issues/53