[gimp] app: set the sensitivity of gegl:channel-mixer

[Michael Natterer <mitch src gnome org>]

commit 33bb4f0b9b24d65e1d93c8315120a77f4435497d
Author: Michael Natterer <mitch gimp org>
Date:   Tue Feb 9 23:36:43 2016 +0100

    app: set the sensitivity of gegl:channel-mixer

 app/actions/filters-actions.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/app/actions/filters-actions.c b/app/actions/filters-actions.c
index c572225..4d048f8 100644
--- a/app/actions/filters-actions.c
+++ b/app/actions/filters-actions.c
@@ -656,6 +656,7 @@ filters_actions_update (GimpActionGroup *group,
   SET_SENSITIVE ("filters-bump-map",                writable);
   SET_SENSITIVE ("filters-c2g",                     writable && !gray);
   SET_SENSITIVE ("filters-cartoon",                 writable);
+  SET_SENSITIVE ("filters-channel-mixer",           writable);
   SET_SENSITIVE ("filters-checkerboard",            writable);
   SET_SENSITIVE ("filters-color-enhance",           writable && !gray);
   SET_SENSITIVE ("filters-color-exchange",          writable);