[gimp] check that the action has a gimp pointer attached before using it

[Sven Neumann <neo src gnome org>]

commit 8c221ebfe51aa3dd30a7b61540be03e74b653b75
Author: Sven Neumann <sven gimp org>
Date:   Fri Oct 9 00:33:27 2009 +0200

    check that the action has a gimp pointer attached before using it

 app/actions/config-commands.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/app/actions/config-commands.c b/app/actions/config-commands.c
index ebacbc1..d11b0b4 100644
--- a/app/actions/config-commands.c
+++ b/app/actions/config-commands.c
@@ -34,7 +34,8 @@ config_use_gegl_cmd_callback (GtkAction *action,
                              gpointer   data)
 {
   GtkToggleAction *toggle_action = GTK_TOGGLE_ACTION (action);
-  Gimp            *gimp          = action_data_get_gimp (data);
+  Gimp            *gimp   = NULL;
+  return_if_no_gimp (gimp, data);
 
   g_object_set (gimp->config,
                 "use-gegl", gtk_toggle_action_get_active (toggle_action),