If either of the recursive calls would have the same x2, y2, x3, and y3
arguments as the current call, the path is as flat as the precision of floats
allows.
Signed-off-by: Ken Thomases <ken@codeweavers.com>
Signed-off-by: Vincent Povirk <vincent@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>