decompress cleanups #489

Job	Run time
Clippy	2m 32s
Build and test (stable, ubuntu-latest, x86_64-unknown-linux-gnu)	41s
cargo-c dynamic library	1m 45s
Clippy (--no-default-features --features="c-allocator")	21s
QEMU build & test (stable, ubuntu-latest, s390x-unknown-linux-gnu, s390x-linux-gnu-gcc, qemu-s390...	52s
Build and test (msrv, ubuntu-latest, x86_64-unknown-linux-gnu)	35s
Clippy (--no-default-features --features="std,rust-allocator")	19s
QEMU build & test (stable, ubuntu-latest, i686-unknown-linux-gnu, i686-linux-gnu-gcc)	29s
Build and test (beta, ubuntu-latest, x86_64-unknown-linux-gnu)	48s
Build and test (stable, macos-latest, x86_64-apple-darwin)	58s
vanilla dynamic library	17s
Smoke-test fuzzing targets (ubuntu-20.04, default)	1m 35s
Miri	2m 17s
Build and test (stable, macos-14, aarch64-apple-darwin)	50s
Smoke-test fuzzing targets (ubuntu-20.04, c-allocator)	1m 34s
Build and test (stable-x86_64-gnu, windows-2022, x86_64-pc-windows-gnu)	1m 27s
Smoke-test fuzzing targets (ubuntu-20.04, rust-allocator)	1m 38s
run bzip2-rs test suite (x86_64-unknown-linux-gnu)	15s
Smoke-test fuzzing targets (macos-14)	1m 50s
wasm32	27s
	21m 30s

Provide feedback