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CheckPassiveGrabsOnWindow() calls AllocGrab() which can fail and return NULL. This return value is not checked, and can cause NULL pointer dereferences. Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
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