[gimp] app: fix composite mode of erase mode

[N/A <ell src gnome org>]

commit 1284715f113fe19aedd5f7981a4b9f7fd92acc1d
Author: Ell <ell_se yahoo com>
Date:   Sat Feb 4 22:29:41 2017 -0500

    app: fix composite mode of erase mode

 .../layer-modes/gimpoperationlayermode.c           |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/app/operations/layer-modes/gimpoperationlayermode.c 
b/app/operations/layer-modes/gimpoperationlayermode.c
index a47adab..b899a2d 100644
--- a/app/operations/layer-modes/gimpoperationlayermode.c
+++ b/app/operations/layer-modes/gimpoperationlayermode.c
@@ -2486,6 +2486,7 @@ static GimpLayerModeInfo gimp_layer_mode_infos[]=
   { GIMP_LAYER_MODE_ERASE,
     "gimp:erase",
     GIMP_LAYER_MODE_FLAG_WANTS_LINEAR_DATA,
+    GIMP_LAYER_COMPOSITE_SRC_ATOP
   },
   { GIMP_LAYER_MODE_REPLACE,
     "gimp:replace",