add trailing newlines to files for Pork :)

app/javascript/mastodon/features/ui/components/mute_modal.js

@@ -98,4 +98,4 @@ export default class MuteModal extends React.PureComponent {
     );
   }
 
-}
+}

app/javascript/mastodon/reducers/mutes.js

@@ -26,4 +26,4 @@ export default function mutes(state = initialState, action) {
   default:
     return state;
   }
-}
+}