IE Control Handle is not destroyed correctly

[AHUser]

With the changes in TCustomEmbeddedWB.CreateWnd/DestroyWnd (that keep the content of the webbrowser after a recreate) it is possible to incorrectly destroy the webbrowser.

type
  TWinControlCracker = class(TWinControl);

begin
  TWinControlCracker(EmbeddedWb1).DestroyHandle; // Handle=0
  // ...
  EmbeddedWb1.Free; // Because Handle=0 => WM_DESTROY is not handled correctly
end;

This is no big problem especially because it is a corner case. But to correctly destroy the webbrowser in this example the attached patch adds code to TCustomEmbeddedWB.Destroy that will restore the Handle if CurrentHandle is still valid, thus the inherited Destroy can correctly destroy the window handle.

[smot]

Thanks, I applied the patch