Modals that include tooltip/popover throws error on close

Created by: Hiws

A modal with a tooltip/popover throws an error on close, if the tooltip/popover wasn't shown while the modal was open. Uncaught TypeError: Cannot read property 'destroy' of null

Steps to reproduce:

1. Go to modal w/ tooltip example
2. Open dev console (i used chrome on windows)
3. Open the modal, and close it again.
4. Notice 3 errors in the console.
5. Open the modal again, hover the one of the links to show a tooltip.
6. Close the modal again.
7. Notice only 2 errors are displayed in the console now, since one tooltip was shown.

The error isn't limited to the docs. Codepen example