[gnome-builder] egg-widget-action-group: add runtime warning

[Christian Hergert <chergert src gnome org>]

commit 354d095410522ff267aeb6e2f89b8f336bd336dd
Author: Christian Hergert <chergert redhat com>
Date:   Tue Nov 22 15:29:21 2016 -0800

    egg-widget-action-group: add runtime warning
    
    https://bugzilla.gnome.org/show_bug.cgi?id=771232

 contrib/egg/egg-widget-action-group.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/contrib/egg/egg-widget-action-group.c b/contrib/egg/egg-widget-action-group.c
index c506544..0e16850 100644
--- a/contrib/egg/egg-widget-action-group.c
+++ b/contrib/egg/egg-widget-action-group.c
@@ -630,6 +630,7 @@ egg_widget_action_group_set_action_enabled (EggWidgetActionGroup *self,
 {
   g_return_if_fail (EGG_IS_WIDGET_ACTION_GROUP (self));
   g_return_if_fail (action_name != NULL);
+  g_return_if_fail (egg_widget_action_group_has_action (G_ACTION_GROUP (self), action_name));
 
   enabled = !!enabled;