This fixes the "obj._toucheggTracker is undefined" error. This can happen if the extension is run under Wayland as obj._toucheggTracker is not initialized when the extension is enabled however it still tries to unhook it when disabling the extension.
This fixes the "obj._toucheggTracker is undefined" error. This can happen if the extension is run under Wayland as obj._toucheggTracker is not initialized when the extension is enabled however it still tries to unhook it when disabling the extension.
May fix issue #57