[PATCH] winex11.drv: Don't confine the pointer to any window when just checking for active grab.

[Rémi Bernon]

Signed-off-by: Rémi Bernon <rbernon at codeweavers.com>
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Even though it doesn't fix https://bugs.winehq.org/show_bug.cgi?id=47771 
the intent was indeed not to confine the pointer.