RFC: Inverse KASSERT in sys/dev/usb/ohci.c:1.150 ?

The KASSERT that replaces an explicit if conditional in ohci.c:1.150
causes a panic here when I try to use my USB flash disk:

% -#ifdef DIAGNOSTIC
% -                        if (curlen == 0)
% -                                panic("ohci_alloc_std: curlen == 0");
% -#endif
% +                        KASSERT ((curlen == 0), ("ohci_alloc_std: curlen == 0"));

Shouldn't the KASSERT expression have inverse logic, i.e.:

	KASSERT((curlen != 0), ("ohci_alloc_std: curlen == 0"));

- Giorgos