[gimp] app: put BLEND_SPACE_IMMUTABLE back for NORMAL

[Michael Natterer <mitch src gnome org>]

commit f8d55b75bb47b8db5e526d4d7f67abb7dadc8157
Author: Michael Natterer <mitch gimp org>
Date:   Sun Feb 26 16:43:59 2017 +0100

    app: put BLEND_SPACE_IMMUTABLE back for NORMAL

 app/operations/layer-modes/gimp-layer-modes.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/app/operations/layer-modes/gimp-layer-modes.c b/app/operations/layer-modes/gimp-layer-modes.c
index 65440f3..28e4a35 100644
--- a/app/operations/layer-modes/gimp-layer-modes.c
+++ b/app/operations/layer-modes/gimp-layer-modes.c
@@ -477,6 +477,7 @@ static const GimpLayerModeInfo layer_mode_infos[] =
 
     .op_name              = "gimp:normal",
     .function             = gimp_operation_normal_process,
+    .flags                = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE,
     .context              = GIMP_LAYER_MODE_CONTEXT_ALL,
     .paint_composite_mode = GIMP_LAYER_COMPOSITE_SRC_OVER,
     .composite_mode       = GIMP_LAYER_COMPOSITE_SRC_OVER,