[babl] extensions: cairo ARGB format is premultiplied

[Massimo Valentini <mvalentini src gnome org>]

commit 9a32d6cc423ba208ed237ba4029ef9ea9da7d9ac
Author: Massimo Valentini <mvalentini src gnome org>
Date:   Fri May 4 19:04:30 2012 +0200

    extensions: cairo ARGB format is premultiplied

 extensions/cairo.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/extensions/cairo.c b/extensions/cairo.c
index 3a0732f..08a3b00 100644
--- a/extensions/cairo.c
+++ b/extensions/cairo.c
@@ -56,7 +56,7 @@ init (void)
     {
       babl_format_new (
         "name", "cairo-ARGB32",
-        babl_model ("R'G'B'A"),
+        babl_model ("R'aG'aB'aA"),
         babl_type ("u8"),
         babl_component ("A"),
         babl_component ("R'a"),