Code review comment for lp:~zorba-coders/zorba/bug-1123165

- The fix for dynamic_function_invocation seems to be orthogonal. Why is this fixed in this merge proposal? I couldn't find a test to cover this behavior.

It does fix some of the W3C tests:

      for $f in () return $f(1, ?)

Raised an error in zorba because it was considered an object lookup. But it looks like valid XQuery to me?