drop "cpath" under -c (no file creation), add pledge comment/marker; OK bcallah

sysutils/truncate/Makefile

@@ -1,6 +1,7 @@
 COMMENT =	truncate or extend the length of files
 DISTNAME =	truncate-5.2.1
 CATEGORIES =	sysutils
+REVISION =	0
 
 HOMEPAGE =	https://www.dragonflybsd.org/
 MAINTAINER =	Brian Callahan <bcallah@openbsd.org>
@@ -8,6 +9,7 @@ MAINTAINER =	Brian Callahan <bcallah@openbsd.org>
 # BSD
 PERMIT_PACKAGE =	Yes
 
+# uses pledge()
 WANTLIB += c
 
 SITES =		https://mirrors.nycbug.org/pub/distfiles/

sysutils/truncate/patches/patch-truncate_c

@@ -0,0 +1,16 @@
+Drop "cpath" under -c (no file creation)
+
+Index: truncate.c
+--- truncate.c.orig
++++ truncate.c
+@@ -84,6 +84,10 @@ main(int argc, char **argv)
+ 	argv += optind;
+ 	argc -= optind;
+ 
++	if (no_create)
++		if (pledge("stdio rpath wpath", NULL) == -1)
++			err(1, "pledge");
++
+ 	/*
+ 	 * Exactly one of do_refer or got_size must be specified.  Since
+ 	 * do_relative implies got_size, do_relative and do_refer are