rust-lang/flate2-rs

AI Summary: Investigate and fix a regression in the `flate2` crate's `miniz_oxide` backend that causes incorrect error handling when decompressing malformed DEFLATE data, specifically focusing on inputs shorter than 5 bytes. The issue manifests inconsistently depending on the input's first byte. The fix should ensure that all invalid DEFLATE streams, regardless of length or initial byte, consistently return an appropriate error.