Need help with duchain infrastructure: function arguments do not appear in quickopen

[Alexander Dymo]

> Debugging such issues is so much easier with unit tests, I recommend
> writing a few ones.
> Especially to make sure changes in kdevplatform don't break your plugin.
> (Ok, that doesn't happen anymore these days)
> 
> And it would be much easier for me to look at this issue :D

Never mind. I've fixed the problem while working on the tests :)
Should have started writing tests before...