[PR PATCH] nrg2iso: update to 0.4.1, fix license

[heliocat <heliocat@users.noreply.github.com>]

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There is a new pull request by heliocat against master on the void-packages repository

https://github.com/heliocat/void-packages nrg2iso
https://github.com/void-linux/void-packages/pull/30689

nrg2iso: update to 0.4.1, fix license
<!-- Mark items with [x] where applicable -->

#### General
- [ ] This is a new package and it conforms to the [quality requirements](https://github.com/void-linux/void-packages/blob/master/Manual.md#quality-requirements)

#### Have the results of the proposed changes been tested?
- [ ] I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
- [x] I generally don't use the affected packages but briefly tested this PR

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#### Does it build and run successfully? 
(Please choose at least one native build and, if supported, at least one cross build. More are better.)
- [x] I built this PR locally for my native architecture, (x86_64)
- [x] I built this PR locally for these architectures (if supported. mark crossbuilds):
  - [x] aarch64-musl
  - [ ] armv7l
  - [ ] armv6l-musl



A patch file from https://github.com/void-linux/void-packages/pull/30689.patch is attached

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From e1501e3c6a11c55bbd5dbda3bfc30ac205754d8a Mon Sep 17 00:00:00 2001
From: Colin Booth <colin@heliocat.net>
Date: Tue, 4 May 2021 22:39:13 -0700
Subject: [PATCH] nrg2iso: update to 0.4.1, fix license

---
 srcpkgs/nrg2iso/template | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/srcpkgs/nrg2iso/template b/srcpkgs/nrg2iso/template
index 3257be3dbef8..a4bcf40e557b 100644
--- a/srcpkgs/nrg2iso/template
+++ b/srcpkgs/nrg2iso/template
@@ -1,14 +1,14 @@
 # Template file for 'nrg2iso'
 pkgname=nrg2iso
-version=0.4
+version=0.4.1
 revision=1
 build_style=gnu-makefile
 short_desc="Simple tool to convert from Nero Burning Rom (NRG) to ISO"
 maintainer="Orphaned <orphan@voidlinux.org>"
-license="GPL-2"
+license="GPL-2.0-only"
 homepage="http://gregory.kokanosky.free.fr/v4/linux/nrg2iso.en.html"
 distfiles="http://gregory.kokanosky.free.fr/v4/linux/${pkgname}-${version}.tar.gz"
-checksum="25049d864680ec12bbe31b20597ce8c1ba3a4fe7a7f11e25742b83e2fda94aa3"
+checksum=3be36a416758fc1910473b49a8dadf2a2aa3d51f1976197336bc174bc1e306e5
 
 do_build() {
 	$CC $CFLAGS $LDFLAGS -o nrg2iso nrg2iso.c