Roassal3: Problem with RSForceBasedLayout

[labradorpeter]

When trying RSForceBasedLayout an exception happened.
The initialLayout is RSGridLayout. The method doExecute: asks for 'horizontalGap', but that's nil.
So here is my patch:

"hgap := self horizontalGap.
vgap := self verticalGap."
hgap := 5.
vgap := 5.

Should be done better.