[evolution-data-server] Incorrect check for CamelSettings value change

[Milan Crha <mcrha src gnome org>]

commit 86cf63042a32b425a75796c63bf45ea7ca89b879
Author: Milan Crha <mcrha redhat com>
Date:   Tue Jun 26 18:43:26 2012 +0200

    Incorrect check for CamelSettings value change
    
    This was causing runtime warnings on evolution start from IMAP provider,
    which reads values from settings for junk/trash real folder, but
    the settings object was set as NULL, which means "create default settings
    for this class", but the test I added for object pointer change did
    succeed for the NULL object (both internal and passed in settings are NULL
    at the beginning), thus the default settings object was not created.

 camel/camel-service.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/camel/camel-service.c b/camel/camel-service.c
index d3a321a..a0350f2 100644
--- a/camel/camel-service.c
+++ b/camel/camel-service.c
@@ -1502,7 +1502,7 @@ camel_service_set_settings (CamelService *service,
 
 	g_return_if_fail (CAMEL_IS_SERVICE (service));
 
-	if (service->priv->settings == settings)
+	if (settings && service->priv->settings == settings)
 		return;
 
 	class = CAMEL_SERVICE_GET_CLASS (service);