[gegl] gegl: more efficient 0 pixel in u8 boxfilter

[Øyvind Kolås <ok src gnome org>]

commit 135285eb6119159bb20b4a48594e37d50b48bfdc
Author: Øyvind Kolås <pippin gimp org>
Date:   Sun Jan 21 00:21:43 2018 +0100

    gegl: more efficient 0 pixel in u8 boxfilter

 gegl/gegl-algorithms.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gegl/gegl-algorithms.c b/gegl/gegl-algorithms.c
index 66201ce..f71ccde 100644
--- a/gegl/gegl-algorithms.c
+++ b/gegl/gegl-algorithms.c
@@ -252,7 +252,7 @@ gegl_boxfilter_u8_nl (guchar              *dest_buf,
                 src[6][3] == 0 &&
                 src[7][3] == 0)
             {
-              dst[0] = dst[1] = dst[2] = dst[3] = 0;
+              (*(uint32_t*)(dst)) = 0;
             }
             else
             {