--- evolution-data-server-1.10.1/libedataserver/e-source-group.c.e-source-group	2007-05-07 15:28:33.000000000 -0400
+++ evolution-data-server-1.10.1/libedataserver/e-source-group.c	2007-05-07 15:28:49.000000000 -0400
@@ -230,6 +230,7 @@
 
 		if (new_source == NULL) {
 			g_object_unref (new);
+			new = NULL;
 			goto done;
 		}
 		e_source_group_add_source (new, new_source, -1);