prefer as_str()

credit
- https://www.fpcomplete.com/blog/avoiding-duplicating-strings-rust/

src/searcher.rs

@@ -56,7 +56,7 @@ impl StaticSearcher {
 impl UserData for StaticSearcher {
     fn add_methods<'lua, M: UserDataMethods<'lua, Self>>(methods: &mut M) {
         methods.add_meta_method(MetaMethod::Call, |lua_ctx, this, name: String| {
-            match this.modules.get(&name as &str) {
+            match this.modules.get(&name.as_str()) {
                 Some(content) => Ok(Value::Function(
                     lua_ctx
                         .load(content)