[easytag] Avoid crash when escaping from delete file dialog

[David King <davidk src gnome org>]

commit f4773b7cc1782f65e27817a34fd8c50285d99f63
Author: David King <amigadave amigadave com>
Date:   Mon May 20 22:52:16 2013 +0100

    Avoid crash when escaping from delete file dialog
    
    Handle the delete event response from the delete file dialog.

 src/easytag.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/easytag.c b/src/easytag.c
index 2cf00f5..4544961 100644
--- a/src/easytag.c
+++ b/src/easytag.c
@@ -3100,7 +3100,7 @@ delete_file (ET_File *ETFile, gboolean multiple_files, GError **error)
         case GTK_RESPONSE_NO:
             break;
         case GTK_RESPONSE_CANCEL:
-        case GTK_RESPONSE_NONE:
+        case GTK_RESPONSE_DELETE_EVENT:
             stop_loop = -1;
             g_free(basename_utf8);
             return stop_loop;