[babl] fix CIE Lab alpha float format

[Øyvind Kolås <ok src gnome org>]

commit 9aa71424fcdd99b2dfb49ac96fccc9fade5d55ed
Author: �yvind Kolås <pippin gimp org>
Date:   Mon Jan 18 00:51:20 2010 +0000

    fix CIE Lab alpha float format
    
    It used to specify a double data type.

 extensions/CIE.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/extensions/CIE.c b/extensions/CIE.c
index f6600b1..75c1213 100644
--- a/extensions/CIE.c
+++ b/extensions/CIE.c
@@ -440,7 +440,7 @@ formats (void)
     "name", "CIE Lab alpha float",
     babl_model ("CIE Lab alpha"),
 
-    babl_type ("double"),
+    babl_type ("float"),
     babl_component ("CIE L"),
     babl_component ("CIE a"),
     babl_component ("CIE b"),