[master] 6bef598 remove __unused for Sun CC

[Nils Goroll]

commit 6bef59867c7e19ce9ef93e93f1242a0ccdeb40ca
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Thu Dec 8 14:34:50 2016 +0100

    remove __unused for Sun CC

diff --git a/include/vdef.h b/include/vdef.h
index 3565d05..9e18a1d 100644
--- a/include/vdef.h
+++ b/include/vdef.h
@@ -114,6 +114,7 @@
 #ifdef __SUNPRO_C
 #define NEEDLESS_RETURN		{}
 #define NEEDLESS(s)		{}
+#define __unused
 #else
 #define NEEDLESS_RETURN		return
 #define NEEDLESS(s)		s