bug#4808: 23.1.50; calc-quit move point to another window

[martin rudalics]

> My frame setup is as follows with point in window 1.
>
>     +------------------+----------+
>     |                  |          |
>     |                  |     2    |
>     |                  |          |
>     |                  |          |
>     |         1        +----------+
>     |                  |          |
>     |                  |     3    |
>     |                  |          |
>     |                  |          |
>     +------------------+----------+
>
> Now `M-x calc' and then quit it with 'q'. You will see point moved to
> window 2. This is reproducible with Emacs -q.

Should be fixed in current trunk.

martin