bug#31240: 26.1; mouse-save-then-kill does not kill rectangles

[martin rudalics]

> It should be
>
> (and (<= start point-to-paste)
>       (<= point-to-paste (+ start (car size))))))))

I forgot to mention that the second conjunct is probably superfluous
here because in that case the rectangles won't intersect in the first
place.  So (<= start point-to-paste) should be sufficient but I have
not tested it.

martin