Merge "res_sorcery_realtime.c: Fix crash from NULL sorcery object type." into 13

res/res_sorcery_realtime.c

@@ -142,7 +142,7 @@ static struct ast_variable *sorcery_realtime_filter_objectset(struct ast_variabl
 		}
 	}
 
-	ao2_ref(object_type, -1);
+	ao2_cleanup(object_type);
 
 	return objectset;
 }