[evolution-ews] EEwsItem::priv->timezone can be NULL

[Milan Crha <mcrha src gnome org>]

commit 3a6d0228813e5290a98a36a1a5cd1f7e3fe3227e
Author: Milan Crha <mcrha redhat com>
Date:   Thu Aug 15 15:34:54 2013 +0200

    EEwsItem::priv->timezone can be NULL
    
    thus do not write runtime warnings on console when it is.

 src/server/e-ews-item.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/server/e-ews-item.c b/src/server/e-ews-item.c
index 1c5d992..05aa3ac 100644
--- a/src/server/e-ews-item.c
+++ b/src/server/e-ews-item.c
@@ -2011,8 +2011,8 @@ const gchar *
 e_ews_item_get_tzid (EEwsItem *item)
 {
        g_return_val_if_fail (E_IS_EWS_ITEM (item), NULL);
-       g_return_val_if_fail (item->priv->timezone != NULL, NULL);
 
+       /* can be NULL */
        return item->priv->timezone;
 }