Update probe.js

[morph3]

This probe has the issue stated in the link below

• js runs before page gets loaded  mandatoryprogrammer/xsshunter-express#11

This commit fixes it.

[dustin-decker]

Could it try again after the page loads rather than setting empty values?

[morph3]

Well actually, you had the line below commented out in the probe. That's my bad, probe still triggers an alert but it looks like it's making not capture the DOM too.

probe_return_data['text'] = get_dom_text();

I just focused on making it capture and not error out whatever happens but that sounds doable too, might give it a shot.

[dustin-decker]

Thanks, for the contribution, this is a good improvement for now.