[gegl] wind: propagate space

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 9116febb85a59f8ffd8cebfa88fda143e606feab
Author: Øyvind Kolås <pippin gimp org>
Date:   Fri Jul 6 12:38:42 2018 +0200

    wind: propagate space

 operations/common-gpl3+/wind.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/operations/common-gpl3+/wind.c b/operations/common-gpl3+/wind.c
index cb8539471..6c93e92f4 100644
--- a/operations/common-gpl3+/wind.c
+++ b/operations/common-gpl3+/wind.c
@@ -344,12 +344,12 @@ static void
 prepare (GeglOperation *operation)
 {
   const Babl *in_format = gegl_operation_get_source_format (operation, "input");
-  const Babl *format = babl_format ("RGB float");
+  const Babl *format = babl_format_with_space ("RGB float", in_format);
 
   if (in_format)
   {
     if (babl_format_has_alpha (in_format))
-      format = babl_format ("RGBA float");
+      format = babl_format_with_space ("RGBA float", in_format);
   }
 
   gegl_operation_set_format (operation, "input", format);