Small reference leak in the merge folder

[Sergio Villar Senin <svillar igalia com>]

Find attached the patch that explains it better than me :-)

Br

Index: tny-merge-folder.c
===================================================================
--- tny-merge-folder.c	(revision 3554)
+++ tny-merge-folder.c	(working copy)
@@ -843,6 +843,7 @@
 			}
 			g_string_append (ids, tny_folder_get_id (cur));
 			g_object_unref (cur);
+			g_object_unref (account);
 			first = FALSE;
 			tny_iterator_next (iter);
 		}