[gimp] plug-ins: fix the build in lcms.c

[Michael Natterer <mitch src gnome org>]

commit 9c371064b7f9cbd95bc8c6f1212143831fd510a0
Author: Michael Natterer <mitch gimp org>
Date:   Wed Nov 28 09:25:34 2012 +0100

    plug-ins: fix the build in lcms.c

 plug-ins/common/lcms.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/plug-ins/common/lcms.c b/plug-ins/common/lcms.c
index 73cf9eb..e6b2f0a 100644
--- a/plug-ins/common/lcms.c
+++ b/plug-ins/common/lcms.c
@@ -991,7 +991,7 @@ lcms_image_transform_rgb (gint32                    image,
       const Babl     *layer_format = gimp_drawable_get_format (layer_id);
       const gboolean  has_alpha    = babl_format_has_alpha (layer_format);
       const Babl     *type         = babl_format_get_type (layer_format, 0);
-      const Babl     *iter_format;
+      const Babl     *iter_format  = NULL;
 
       if (type == babl_type ("u8"))
         {
@@ -1081,7 +1081,8 @@ lcms_image_transform_rgb (gint32                    image,
                    *  copy everything to dest before the transform
                    */
                   if (layer_alpha)
-                    memcpy (iter->data[1], iter->data[0], iter->length * bpp);
+                    memcpy (iter->data[1], iter->data[0],
+                            iter->length * layer_bpp);
 
                   cmsDoTransform (transform,
                                   iter->data[0], iter->data[1], iter->length);