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clipper: Also need to guard against the incoming clip being NULL

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-07-29 12:57:31 +01:00
parent fb9ed9bb0d
commit 29a302cc4b
1 changed files with 1 additions and 1 deletions
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2
src/cairo-surface-clipper.c
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@ -133,7 +133,7 @@ _cairo_surface_clipper_set_clip (cairo_surface_clipper_t *clipper,
assert (!_cairo_clip_is_all_clipped (clip));
/* XXX Is this an incremental clip? */
if (clipper->clip &&
if (clipper->clip && clip &&
clip->num_boxes == clipper->clip->num_boxes &&
memcmp (clip->boxes, clipper->clip->boxes,
sizeof (cairo_box_t) * clip->num_boxes) == 0)