[gegl] algorithms: fix bug 794900, boxfilter broke in previous commit

[Øyvind Kolås <ok src gnome org>]

commit 829ec28fd3a62048eb0e3de2bbe4cf0a60c7985b
Author: Øyvind Kolås <pippin gimp org>
Date:   Mon Apr 2 16:57:10 2018 +0200

    algorithms: fix bug 794900, boxfilter broke in previous commit

 gegl/gegl-algorithms.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gegl/gegl-algorithms.c b/gegl/gegl-algorithms.c
index 760e460..f389ac7 100644
--- a/gegl/gegl-algorithms.c
+++ b/gegl/gegl-algorithms.c
@@ -420,7 +420,7 @@ gegl_boxfilter_u8_nl_alpha (guchar              *dest_buf,
               dst[3] = (
                 ((src[0][3]) * t + (src[3][3]) * m + (src[6][3]) * b) * l +
                 ((src[1][3]) * t + (src[4][3]) * m + (src[7][3]) * b) * c +
-                ((src[2][3]) * t + (src[5][3]) * m + (src[8][3]) * b) * r) / 4;
+                ((src[2][3]) * t + (src[5][3]) * m + (src[8][3]) * b) * r);
               }
             dst += 4;
             }
@@ -433,7 +433,7 @@ gegl_boxfilter_u8_nl_alpha (guchar              *dest_buf,
               dst[1] = (
                 ((src[0][1]) * t + (src[3][1]) * m + (src[6][1]) * b) * l +
                 ((src[1][1]) * t + (src[4][1]) * m + (src[7][1]) * b) * c +
-                ((src[2][1]) * t + (src[5][1]) * m + (src[8][1]) * b) * r) / 4;
+                ((src[2][1]) * t + (src[5][1]) * m + (src[8][1]) * b) * r);
             );
         break;
         default:
@@ -448,7 +448,7 @@ gegl_boxfilter_u8_nl_alpha (guchar              *dest_buf,
               dst[components-1] = (
                   ((src[0][components-1]) * t + (src[3][components-1]) * m + (src[6][components-1]) * b) * l 
+
                   ((src[1][components-1]) * t + (src[4][components-1]) * m + (src[7][components-1]) * b) * c 
+
-                  ((src[2][components-1]) * t + (src[5][components-1]) * m + (src[8][components-1]) * b) * 
r) / 4;
+                  ((src[2][components-1]) * t + (src[5][components-1]) * m + (src[8][components-1]) * b) * 
r);
            );
       }
     }