updated license header
to clarify dual-license meaning as "or"
diff --git a/lib/common/error_private.h b/lib/common/error_private.h
index a55bce8..0d2fa7e 100644
--- a/lib/common/error_private.h
+++ b/lib/common/error_private.h
@@ -5,6 +5,7 @@
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
+ * You may select, at your option, one of the above-listed licenses.
*/
/* Note : this module is expected to remain private, do not expose it */