Silence warning about matches macro

These were flagged by `cargo clippy`:

    warning: match expression looks like `matches!` macro

The matches! macro isn't stabilized until Rust 1.42.

src/lib.rs

@@ -90,6 +90,7 @@ compile_error!("at least one socket needs to be enabled"); */
 // FIXME(dlrobertson): clippy fails with this lint
 #![allow(clippy::if_same_then_else)]
 #![allow(clippy::manual_non_exhaustive)]
+#![allow(clippy::match_like_matches_macro)]
 
 #[cfg(feature = "alloc")]
 extern crate alloc;