minidlna: fix build with FFmpeg 7 and later

FFmpeg 7 removed AVCodecParameters.channels, causing MiniDLNA 1.3.3
to fail to compile when reading audio channel counts.

Add an OpenWrt package patch to use ch_layout.nb_channels with
libavcodec 61 and later. Retain the existing channels field access
for older versions.

Signed-off-by: Marcin Maj <marcinmajsc@gmail.com>

Author: marcinmajsc

multimedia/minidlna/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=minidlna
 PKG_VERSION:=1.3.3
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=@SF/minidlna

multimedia/minidlna/patches/999-fix-ffmpeg-channels.patch

@@ -0,0 +1,17 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Marcin Maj <marcinmajsc@gmail.com>
+Date: Sat, 19 Sep 2026 12:00:00 +0000
+Subject: [PATCH] Fix audio channel count access with FFmpeg 7
+---
+ libav.h | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/libav.h b/libav.h
+--- a/libav.h
++++ b/libav.h
+@@ -177 +177,5 @@
++#if LIBAVCODEC_VERSION_MAJOR >= 61
++#define lav_channels(s) s->codecpar->ch_layout.nb_channels
++#else
+ #define lav_channels(s) s->codecpar->channels
++#endif