[gimp] plug-ins: twain: fix layer mode name

[Hartmut Kuhse <hartmutkuhse src gnome org>]

commit 819b749a3b489e8e7645bf375d696df5e5e6a02a
Author: Hartmut Kuhse <hk_priv gmx de>
Date:   Sat Jan 14 16:33:47 2017 +0100

    plug-ins: twain: fix layer mode name

 plug-ins/twain/twain.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/plug-ins/twain/twain.c b/plug-ins/twain/twain.c
index 9c6f08a..3d0cc04 100644
--- a/plug-ins/twain/twain.c
+++ b/plug-ins/twain/twain.c
@@ -567,7 +567,7 @@ beginTransferCallback(pTW_IMAGEINFO imageInfo, void *clientData)
                                           _("Background"),
                                           imageInfo->ImageWidth,
                                           imageInfo->ImageLength,
-                                          layerType, 100, GIMP_NORMAL_MODE);
+                                          layerType, 100, GIMP_LAYER_MODE_NORMAL);
 
   /* Add the layer to the image */
   gimp_image_insert_layer(theClientData->image_id,