- Fix usage of setmode. it can fail due to malloc, so we should print the
  correct error message.
- Add WARNS?= 6

Submitted by: Liam J. Foy <liamfoy@gmail.com>
Index: src/bin/chmod/chmod.c
===================================================================
--- src/bin/chmod/chmod.c	(revision 91)
+++ src/bin/chmod/chmod.c	(revision 92)
@@ -145,8 +145,14 @@
 		change_mode = chmod;
 
 	mode = *argv;
-	if ((set = setmode(mode)) == NULL)
-		errx(1, "invalid file mode: %s", mode);
+	errno = 0;
+	if ((set = setmode(mode)) == NULL) {
+		if (!errno)
+			errx(1, "invalid file mode: %s", mode);
+		else
+			/* malloc for setmode failed */
+			err(1, "setmode");
+	}
 
 	if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL)
 		err(1, "fts_open");
Index: src/bin/chmod/Makefile
===================================================================
--- src/bin/chmod/Makefile	(revision 91)
+++ src/bin/chmod/Makefile	(revision 92)
@@ -2,5 +2,6 @@
 # $FreeBSD: src/bin/chmod/Makefile,v 1.10 2002/07/15 12:08:21 sheldonh Exp $
 
 PROG=	chmod
+WARNS?=	6
 
 .include <bsd.prog.mk>