fix: helper use_state_auto_clean not returned

Author: EqualMa

README.md

@@ -12,7 +12,7 @@ Rust bindings for `React`.
 `Cargo.toml`
 
 ```toml
-react-sys = "1.0.0-alpha.9"
+react-sys = "1.0.0-alpha.10"
 ```
 
 Though the version is at `1.x-alpha`,

helpers/use-state-import.js

@@ -10,4 +10,5 @@ export function use_state_auto_clean(initial_value, clean) {
   React.useEffect(() => {
     clean(state);
   }, [state]);
+  return obj;
 }

helpers/use-state.js

@@ -8,4 +8,5 @@ export function use_state_auto_clean(initial_value, clean) {
   React.useEffect(() => {
     clean(state);
   }, [state]);
+  return obj;
 }