[evolution/wip/webkit-composer] EEditorActions: Don't try to continue if given object is not EEditor

[Tomas Popela <tpopela src gnome org>]

commit 531367748a045ccc8a489963117c5e9b95ff80ef
Author: Tomas Popela <tpopela redhat com>
Date:   Wed Feb 26 11:16:48 2014 +0100

    EEditorActions: Don't try to continue if given object is not EEditor

 e-util/e-editor-actions.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/e-util/e-editor-actions.c b/e-util/e-editor-actions.c
index 7f511fe..53b0e15 100644
--- a/e-util/e-editor-actions.c
+++ b/e-util/e-editor-actions.c
@@ -622,6 +622,9 @@ update_mode_combobox (gpointer data)
        GtkAction *action;
        gboolean is_html;
 
+       if (!E_IS_EDITOR (editor))
+               return FALSE;
+
        editor_widget = e_editor_get_editor_widget (editor);
        is_html = e_editor_widget_get_html_mode (editor_widget);