[gimp] app: fix loading of a buffer's last tile in xcf-load.c

[Michael Natterer <mitch src gnome org>]

commit 025f0b03256d1489f46516a7df324f09d593c038
Author: Michael Natterer <mitch gimp org>
Date:   Sat Sep 22 18:38:13 2012 +0200

    app: fix loading of a buffer's last tile in xcf-load.c
    
    The last tile is not followed by a next tile, so we don't have an
    offset to the next tile and have to guess the number of bytes to load,
    using the largest possible tile. That guessing was based on a maximum
    of four bytes per pixel.

 app/xcf/xcf-load.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/app/xcf/xcf-load.c b/app/xcf/xcf-load.c
index 8b38ed3..861aadf 100644
--- a/app/xcf/xcf-load.c
+++ b/app/xcf/xcf-load.c
@@ -1434,6 +1434,7 @@ xcf_load_level (XcfInfo    *info,
                 GeglBuffer *buffer)
 {
   const Babl *format;
+  gint        bpp;
   guint32     saved_pos;
   guint32     offset, offset2;
   gint        n_tile_rows;
@@ -1445,6 +1446,7 @@ xcf_load_level (XcfInfo    *info,
   gint        fail;
 
   format = gegl_buffer_get_format (buffer);
+  bpp    = babl_format_get_bytes_per_pixel (format);
 
   info->cp += xcf_read_int32 (info->fp, (guint32 *) &width, 1);
   info->cp += xcf_read_int32 (info->fp, (guint32 *) &height, 1);
@@ -1491,7 +1493,7 @@ xcf_load_level (XcfInfo    *info,
       /* if the offset is 0 then we need to read in the maximum possible
          allowing for negative compression */
       if (offset2 == 0)
-        offset2 = offset + XCF_TILE_WIDTH * XCF_TILE_WIDTH * 4 * 1.5;
+        offset2 = offset + XCF_TILE_WIDTH * XCF_TILE_WIDTH * bpp * 1.5;
                                         /* 1.5 is probably more
                                            than we need to allow */