Fix license header

tests/fuzz/fuzz_common.h

@@ -1,7 +1,6 @@
-//
-// Created by profanter on 18.07.17.
-// Copyright (c) 2017 fortiss GmbH. All rights reserved.
-//
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #ifndef OPEN62541_FUZZ_COMMON_H_H
 #define OPEN62541_FUZZ_COMMON_H_H