put upstream reference together with the patch

OBS-URL: https://build.opensuse.org/package/show/filesharing/rtorrent?expand=0&rev=9

0001-utils-lockfile-avoid-stack-overflow-for-lockfile-buf.patch

@@ -2,6 +2,7 @@ From 954bfb70f24578ef33b1f77cf1a3d64fc2f2f595 Mon Sep 17 00:00:00 2001
 From: Aleksa Sarai <cyphar@cyphar.com>
 Date: Mon, 20 Jun 2022 19:09:57 +1000
 Subject: [PATCH] utils: lockfile: avoid stack overflow for lockfile buffer
+References: https://github.com/rakshasa/rtorrent/pull/1169
 
 Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
 ---

rtorrent.spec

@@ -1,7 +1,7 @@
 #
 # spec file for package rtorrent
 #
-# Copyright (c) 2020 SUSE LLC
+# Copyright (c) 2022 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -29,7 +29,6 @@ Source2:        rtorrent.desktop
 # This manpage copied from the 0.9.2 tarball as it was missing in later versions
 Source3:        rtorrent.1
 Source4:        rtorrent.service
-# FIX-UPSTREAM: Backport of <https://github.com/rakshasa/rtorrent/pull/1169>.
 Patch1:         0001-utils-lockfile-avoid-stack-overflow-for-lockfile-buf.patch
 BuildRequires:  automake
 BuildRequires:  gcc-c++
@@ -49,8 +48,7 @@ background using screen. It supports fast-resume and session
 management.
 
 %prep
-%setup -q
-%patch1 -p1
+%autosetup -p1
 
 %build
 # It's full of type pun violations