[evolution/webkit-composer: 218/231] Check if returned EEditor is valid.

[Tomas Popela <tpopela src gnome org>]

commit 9e9cbc465cd6c2c165eade89ced4a539353f0bfb
Author: Tomas Popela <tpopela redhat com>
Date:   Mon Jul 22 11:39:43 2013 +0200

    Check if returned EEditor is valid.
    
    When closing down an editor with attachments added the editor is destroyed and
    the attachments are freed. But from store the row-deleted signal is emitted for
    every attachment. In callback for that signal - attachment_store_changed_cb
    we are marking the editor as changed. But the e_msg_composer_get_editor will return
    us the NULL value instead of valid address as EEditor is already destroyed.

 composer/e-msg-composer.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/composer/e-msg-composer.c b/composer/e-msg-composer.c
index 390fd1b..169ddf3 100644
--- a/composer/e-msg-composer.c
+++ b/composer/e-msg-composer.c
@@ -1563,8 +1563,10 @@ attachment_store_changed_cb (EMsgComposer *composer)
        /* Mark the editor as changed so it prompts about unsaved
         * changes on close. */
        editor = e_msg_composer_get_editor (composer);
-       editor_widget = e_editor_get_editor_widget (editor);
-       e_editor_widget_set_changed (editor_widget, TRUE);
+       if (editor) {
+               editor_widget = e_editor_get_editor_widget (editor);
+               e_editor_widget_set_changed (editor_widget, TRUE);
+       }
 }
 
 static void