Fixes out of bounds memory access when closing a window that overlaps
with the menu bar at the top of the screen. This crashed at least some
release builds, including Windows release 2.8.1.
Mixed-Up Mother Goose is the only game known to draw a text window over
the menu bar. When I recently added support for this, I missed that the
code for closing the window needed to be updated too:
bc8550ce02a036e3757d817e963e038463844412
Fixes bug #15241
Big thanks to @hugoarpin for reporting this and testing the fix.
cb0db51091