$NetBSD$

- silence annoying warning

--- piping.h~	2001-12-15 10:49:03.000000000 +0000
+++ piping.h
@@ -79,4 +79,4 @@ int piping_isvalid_command(char *command
  * that couldn't get found */
 int piping_isvalid_commandchain(char *chain,const char *message);
 
-#endif PIPING_H
+#endif /* PIPING_H */
