Fix race condition when delay() is called after a timeout

[sth]

When the mouse leaves an active element element, delay() is called after a timeout. If during that time the node is removed with $(...).remove(), the node's data will be cleared by jquery and accessing $el.data('hoverIntent')[s.id] in delay() will fail with an error like this:

Uncaught TypeError: Cannot convert undefined or null to object

The error can be seen in the browser console when executing this fiddle: https://jsfiddle.net/t563wuve/

The solution is easy: Only delete the state if it's still there.

[usmonster]

Hi @sth! Good catch—your fix will be in the next patch version.

Thanks for your clear report and your contribution!