[gimp] app: avoid some GCC warnings due to unhandled switch cases

[N/A <ell src gnome org>]

commit 50d8455890f35020efe13dec91fe822eb1df97b0
Author: Ell <ell_se yahoo com>
Date:   Fri Feb 17 09:54:04 2017 -0500

    app: avoid some GCC warnings due to unhandled switch cases

 app/operations/layer-modes/gimpoperationerase.c    |    1 +
 .../layer-modes/gimpoperationlayermode.c           |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/app/operations/layer-modes/gimpoperationerase.c b/app/operations/layer-modes/gimpoperationerase.c
index 729d636..1cc1ba8 100644
--- a/app/operations/layer-modes/gimpoperationerase.c
+++ b/app/operations/layer-modes/gimpoperationerase.c
@@ -119,6 +119,7 @@ gimp_operation_erase_process (GeglOperation       *op,
       break;
 
     case GIMP_LAYER_COMPOSITE_SRC_ATOP:
+    case GIMP_LAYER_COMPOSITE_AUTO:
       while (samples--)
         {
           gfloat layer_alpha;
diff --git a/app/operations/layer-modes/gimpoperationlayermode.c 
b/app/operations/layer-modes/gimpoperationlayermode.c
index f83f2a0..73e54b7 100644
--- a/app/operations/layer-modes/gimpoperationlayermode.c
+++ b/app/operations/layer-modes/gimpoperationlayermode.c
@@ -2013,6 +2013,7 @@ gimp_layer_mode_get_blend_fun (GimpLayerMode mode)
     case GIMP_LAYER_MODE_ERASE:
     case GIMP_LAYER_MODE_REPLACE:
     case GIMP_LAYER_MODE_ANTI_ERASE:
+    case GIMP_LAYER_MODE_SEPARATOR: /* to stop GCC from complaining :P */
       return blendfun_dummy;
     }