[PATCH v5] user32: Don't save maximized position placement for toplevel windows covering the entire work area.

[Gabriel Ivăncescu]

I realized one thing: this is holding a lock implicitly while calling 
MonitorFromWindow or GetWindowLongW (with GWL_STYLE) via the WND 
pointer. Is that a problem?

I'm not very familiar with this so I don't know if it's a good idea or 
not (I know sending messages isn't). Perhaps due to Windows API hooks?

Fixing it would obviously complicate the code so I'd rather only do it 
if necessary.