[gegl/abyss] buffer: respect stride and width in iterators

[Ville Sokk <villesokk src gnome org>]

commit 2397be6f8e67c4f6be05871fd547a4ad631f042b
Author: Ville Sokk <ville sokk gmail com>
Date:   Tue Jul 17 19:53:24 2012 +0300

    buffer: respect stride and width in iterators

 gegl/buffer/gegl-buffer-access.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/gegl/buffer/gegl-buffer-access.c b/gegl/buffer/gegl-buffer-access.c
index 7aecf18..7164bfa 100644
--- a/gegl/buffer/gegl-buffer-access.c
+++ b/gegl/buffer/gegl-buffer-access.c
@@ -621,13 +621,13 @@ gegl_buffer_iterate_read_abyss_none (GeglBuffer          *buffer,
         { /* entire row of tiles is in abyss */
           gint    row;
           gint    y  = bufy;
-          guchar *bp = buf + ((bufy) * width) * bpx_size;
+          guchar *bp = buf + bufy * buf_stride;
 
           for (row = offsety;
                row < tile_height && y < height;
                row++, y++)
             {
-              memset (bp, 0x00, buf_stride);
+              memset (bp, 0x00, width * bpx_size);
               bp += buf_stride;
             }
         }
@@ -778,13 +778,13 @@ gegl_buffer_iterate_read_abyss_color (GeglBuffer          *buffer,
         { /* entire row of tiles is in abyss */
           gint    row;
           gint    y  = bufy;
-          guchar *bp = buf + ((bufy) * width) * bpx_size;
+          guchar *bp = buf + bufy * buf_stride;
 
           for (row = offsety;
                row < tile_height && y < height;
                row++, y++)
             {
-              for (i = 0; i < buf_stride; i += bpx_size)
+              for (i = 0; i < width * bpx_size; i += bpx_size)
                 memcpy (bp + i, color, bpx_size);
               bp += buf_stride;
             }