Wrong warning about number of arguments for a functor

Hi!

Here is a small example:

struct Foo
{
  Foo(int a) : my_a(a) {}
  int operator()(int a, int b) { return my_a + a + b; }
private:
  int my_a;
};

int main()
{
  int a = 0, b = 0;
  Foo foo(a);
  return foo(a, b);
}

qtc underlines foo(a, b) in main() with 'too many arguments' hint. But if I replace argument in constructor by a constant, for example
Foo foo(1)
then qtc parses code correctly.