fix: warning

Author: Benjamin Bachmann

packages/rusty_chacha_dart/rust/build.rs

@@ -16,7 +16,7 @@ fn main() -> Result<()> {
         include_guard: Some("EMBEDDED_RUSTY_CHACHA".into()),
         ..Default::default()
     };
-    cbindgen::generate_with_config(&crate_dir, config)
+    cbindgen::generate_with_config(crate_dir, config)
       .unwrap()
       .write_to_file("../../../target/EmbeddedRustyChacha.h");