[Bug 43946] wineboot crashes with stack smashing on aarch64

https://bugs.winehq.org/show_bug.cgi?id=43946

--- Comment #9 from André H.  ---
patch was rejected for good reasons i think...
debugging it shows that the stack smashing happens in map_view()

it seems it's because the process stack is where it should not be in my
understanding:

00140000-00142000 ---p 00000000 00:00 0 
00142000-00241000 rw-p 00000000 00:00 0    [stack:4583]
00241000-00250000 ---p 00000000 00:00 0