[gimp] app: fix gegl convolve to actually write back the result when not in alpha weighted mode

[Alexia Death <alexiade src gnome org>]

commit 8cfabf7e60e8be6c503eaa4d30444e566e0454e5
Author: Alexia Death <alexiadeath gmail com>
Date:   Wed Nov 12 15:27:11 2014 +0200

    app: fix gegl convolve to actually write back the result when not in alpha weighted mode

 app/gegl/gimp-gegl-loops.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/app/gegl/gimp-gegl-loops.c b/app/gegl/gimp-gegl-loops.c
index 07b96fe..62b4cc1 100644
--- a/app/gegl/gimp-gegl-loops.c
+++ b/app/gegl/gimp-gegl-loops.c
@@ -194,7 +194,7 @@ gimp_gegl_convolve (GeglBuffer          *src_buffer,
                       if (mode != GIMP_NORMAL_CONVOL && total[b] < 0.0)
                         total[b] = - total[b];
 
-                      total[b] = CLAMP (total[b], 0.0, 1.0);
+                      *d++ = CLAMP (total[b], 0.0, 1.0);
                     }
                 }
             }