mail/mblaze: adjust pledge promises for mdeliver/mrefile

Hello,

I just found that mdeliver -M (and mrefile) needs the `fattr' pledge
promise too since they use utimes(2). I've mailed the same diff
upstream too.

To reproduce try to import an mbox (can be generated with mexport, in
my case was generated by someone else) with

$ mdeliver -M maildir < mbox


ok?

i can backport it for stable too eventually.

Index: Makefile
===================================================================
RCS file: /home/cvs/ports/mail/mblaze/Makefile,v
retrieving revision 1.15
diff -u -p -r1.15 Makefile
--- Makefile 11 Mar 2022 19:34:40 -0000 1.15
+++ Makefile 26 Aug 2022 09:10:26 -0000
@@ -1,6 +1,7 @@
COMMENT = set of Maildir utilities

DISTNAME = mblaze-1.2
+REVISION = 0
CATEGORIES = mail

HOMEPAGE = https://git.vuxu.org/mblaze/
Index: patches/patch-mdeliver_c
===================================================================
RCS file: patches/patch-mdeliver_c
diff -N patches/patch-mdeliver_c
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ patches/patch-mdeliver_c 26 Aug 2022 09:17:44 -0000
@@ -0,0 +1,18 @@
+mrefile or mdeliver -M needs fattr for utimes(2)
+
+Index: mdeliver.c
+--- mdeliver.c.orig
++++ mdeliver.c
+@@ -355,7 +355,11 @@ usage2:
+ if (argc != optind+1)
+ goto usage2;
+
+- xpledge("stdio rpath wpath cpath", "");
++ xpledge("stdio rpath wpath cpath fattr", "");
++ if (!preserve_mtime && !Mflag) {
++ /* drop fattr */
++ xpledge("stdio rpath wpath cpath", "");
++ }
+
+ targetdir = argv[optind];
+