Treat implicit-fallthrough only as a warning

external/bsd/pkg_install/sbin/pkg_create/Makefile

@@ -1,9 +1,11 @@
-# $NetBSD: Makefile,v 1.2 2009/02/02 20:47:21 joerg Exp $
+# $NetBSD: Makefile,v 1.3 2019/04/06 10:29:13 pgoyette Exp $
 # Original from FreeBSD, no rcs id.
 
 PROG= pkg_create
 SRCS= main.c perform.c pl.c util.c build.c
 
+COPTS.main.c+=	-Wno-error=implicit-fallthrough
+
 .include <bsd.init.mk>
 
 .PATH:	${DIST}/create