Bug#785586: "sync" user is missing

[Jonny <jonny@csc.jp>]

Package: release-notes
Severity: minor
tags: patch

There is no "sync" user in the list of system users:
https://www.debian.org/releases/jessie/amd64/release-notes/ch-information.en.html#base-passwd-hardening

processing of base-passwd.preinst is as follows:
                cat > /etc/passwd <<'EOF'
root:*:0:0:root:/root:/bin/bash
daemon:*:1:1:daemon:/usr/sbin:/usr/sbin/nologin
bin:*:2:2:bin:/bin:/usr/sbin/nologin
sys:*:3:3:sys:/dev:/usr/sbin/nologin
sync:*:4:65534:sync:/bin:/bin/sync
games:*:5:60:games:/usr/games:/usr/sbin/nologin
man:*:6:12:man:/var/cache/man:/usr/sbin/nologin
lp:*:7:7:lp:/var/spool/lpd:/usr/sbin/nologin
mail:*:8:8:mail:/var/mail:/usr/sbin/nologin
news:*:9:9:news:/var/spool/news:/usr/sbin/nologin
uucp:*:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin
proxy:*:13:13:proxy:/bin:/usr/sbin/nologin
www-data:*:33:33:www-data:/var/www:/usr/sbin/nologin
backup:*:34:34:backup:/var/backups:/usr/sbin/nologin
list:*:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin
irc:*:39:39:ircd:/var/run/ircd:/usr/sbin/nologin
gnats:*:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/usr/sbin/nologin
nobody:*:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
EOF

--- a/release-notes/en/issues.dbk
+++ b/release-notes/en/issues.dbk
@@ -781,6 +781,9 @@
       <para>sys</para>
     </listitem>
     <listitem>
+      <para>sync</para>
+    </listitem>
+    <listitem>
       <para>games</para>
     </listitem>
     <listitem>