style(napi): clippy fix (#1815)

crates/backend/src/typegen/struct.rs

@@ -41,12 +41,10 @@ impl ToTypeDef for NapiImpl {
           self.name.to_string(),
           if resolved_type == "undefined" {
             "void".to_owned()
+          } else if is_optional {
+            format!("{} | null", resolved_type)
           } else {
-            if is_optional {
-              format!("{} | null", resolved_type)
-            } else {
-              resolved_type
-            }
+            resolved_type
           },
         );
       });

crates/napi/src/bindgen_runtime/js_values/string.rs

@@ -34,7 +34,7 @@ impl ToNapiValue for &String {
 impl ToNapiValue for String {
   #[inline]
   unsafe fn to_napi_value(env: sys::napi_env, val: Self) -> Result<sys::napi_value> {
-    #[allow(clippy::needless_borrow)]
+    #[allow(clippy::needless_borrows_for_generic_args)]
     unsafe {
       ToNapiValue::to_napi_value(env, &val)
     }