[ros-kernel] wrong cursor and crash while mouse moving

[Ge van Geldorp]

> From: Hartmut Birr
> 
> since some days, I get a wrong mouse cursor. If I move the 
> mouse a little bit, I get a crash within ExFreeNonPagedPool 
> because the freed address wasn't an allocated address. The 
> calling sequence is:
> 
> NtUserSetCursor
> IntSetCursor
> SurfGDI->SetPointerShape (_DrvSetPointerShape)
> EngSetPointerShape
> EngFreeMem
> ExFreePool
> ExFreeNonPagedPool
> 
> I'm using the vbe driver with a resolution of 800x600 and 8 
> bit color depth.

This is probably my fault. I'll try to fix it tonight, if I can't find
it I'll revert the change.

Ge van Geldorp.