Fix a couple of warnings when building for waam

Author: bjorn3

test-libz-rs-sys/examples/compress.rs

@@ -5,7 +5,9 @@ use std::{collections::hash_map::DefaultHasher, env::temp_dir, hash::Hash};
 // we use the libz_sys but configure zlib-ng in zlib compat mode
 use libz_sys as libz_ng_sys;
 
-use zlib_rs::{deflate::DeflateConfig, DeflateFlush, ReturnCode};
+#[cfg(not(target_family = "wasm"))]
+use zlib_rs::deflate::DeflateConfig;
+use zlib_rs::{DeflateFlush, ReturnCode};
 
 use std::ffi::{c_int, c_uint};
 

zlib-rs/src/allocate.rs

@@ -1,3 +1,4 @@
+#[cfg(unix)]
 use core::ffi::c_int;
 use core::{
     alloc::Layout,