XWarpPointer will always succeed, regardless of grabs, so if the pointer
is already grabbed, by some other application, we should not ask to warp
it.
Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>