minor fix

Author: slorber

src/Hooks.ts

@@ -190,7 +190,7 @@ export const useFocusEffect = (callback: EffectCallback) => {
 export const useIsFocused = () => {
   const navigation = useNavigation();
   const getNavigation = useGetter(useNavigation());
-  const [focused, setFocused] = useState(navigation.isFocused());
+  const [focused, setFocused] = useState(navigation.isFocused);
 
   useEffect(() => {
     const nav = getNavigation();