[PATCH] image: Quell warning about signed/unsigned int comparison.

Restore (int) cast that was dropped in e7e1ac23.

Signed-off-by: Bryce Harrington <[email protected]>
---
 src/cairo-image-compositor.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/cairo-image-compositor.c b/src/cairo-image-compositor.c
index 19372be..a79dc40 100644
--- a/src/cairo-image-compositor.c
+++ b/src/cairo-image-compositor.c
@@ -1548,7 +1548,7 @@ typedef struct _cairo_image_span_renderer {
 	} mask;
     } u;
     uint8_t _buf[0];
-#define SZ_BUF (sizeof (cairo_abstract_span_renderer_t) - sizeof (cairo_image_span_renderer_t))
+#define SZ_BUF (int)(sizeof (cairo_abstract_span_renderer_t) - sizeof (cairo_image_span_renderer_t))
 } cairo_image_span_renderer_t;
 COMPILE_TIME_ASSERT (sizeof (cairo_image_span_renderer_t) <= sizeof (cairo_abstract_span_renderer_t));
 
-- 
1.7.9.5
-- 
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