[Glitch] Run eslint --fix

I don't like it changing files this way, but it's basically what
c49213f0ea and a few others did.

app/javascript/flavours/glitch/features/ui/components/upload_area.js

@@ -22,7 +22,7 @@ export default class UploadArea extends React.PureComponent {
         break;
       }
     }
-  }
+  };
 
   componentDidMount () {
     window.addEventListener('keyup', this.handleKeyUp, false);