Corrected the determination of capturing inside EDIT_WM_MouseMove function.

[Dimitrie Paun]

> Corrected the determination of capturing inside EDIT_WM_MouseMove
function.

> - if (GetCapture() != es->hwndSelf)
> + if (GetCapture() != es->hwndSelf || !es->bCaptureState)

Can we have
  GetCapture() == es->hwndSelf && !es->bCaptureState

If so, isn't this an invalid state? How do we get there?

-- 
Dimi.