Don't try to get the target node for responder if there is no listener

This can happen in edge cases where he listeners are already
unmounted or not mounted yet or something.

src/renderers/shared/event/EventPluginUtils.js

@@ -204,7 +204,7 @@ function executeDirectDispatch(event) {
     !Array.isArray(dispatchListener),
     'executeDirectDispatch(...): Invalid `event`.'
   );
-  event.currentTarget = EventPluginUtils.getNodeFromInstance(dispatchInstance);
+  event.currentTarget = dispatchListener ? EventPluginUtils.getNodeFromInstance(dispatchInstance) : null;
   var res = dispatchListener ? dispatchListener(event) : null;
   event.currentTarget = null;
   event._dispatchListeners = null;