[gnome-calendar] source-dialog: fix credentials leaked data

[Erick Pérez Castellanos <erickpc src gnome org>]

commit 76432b81e0db0cec2709ba8c93adba9464d4a304
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sun Apr 19 14:47:21 2015 -0300

    source-dialog: fix credentials leaked data

 src/gcal-source-dialog.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gcal-source-dialog.c b/src/gcal-source-dialog.c
index 1de9648..ac968c8 100644
--- a/src/gcal-source-dialog.c
+++ b/src/gcal-source-dialog.c
@@ -1196,8 +1196,8 @@ validate_url_cb (GcalSourceDialog *dialog)
           gint response;
           gchar *user, *password;
 
-          response = prompt_credentials (dialog, &user, &password);
           user = password = NULL;
+          response = prompt_credentials (dialog, &user, &password);
 
           /*
            * User entered username and password, let's try