community/v4l-utils: fix segfault and url

- update upstream URL
- add a fix for parse_next_subopt() to no longer rely on glibc specific
  implementation of getsubopt(). As result, `v4l2-ctl -c foo=bar` will
  no longer segfault

community/v4l-utils/APKBUILD

@@ -2,9 +2,9 @@
 # Maintainer: Francesco Colista <fcolista@alpinelinux.org>
 pkgname=v4l-utils
 pkgver=1.22.1
-pkgrel=0
+pkgrel=1
 pkgdesc="Userspace tools and conversion library for Video 4 Linux"
-url="http://freshmeat.net/projects/libv4l"
+url="https://linuxtv.org/"
 arch="all"
 license="LGPL-2.0-or-later"
 makedepends="qt5-qtbase-dev libjpeg-turbo-dev argp-standalone linux-headers
@@ -12,6 +12,7 @@ makedepends="qt5-qtbase-dev libjpeg-turbo-dev argp-standalone linux-headers
 subpackages="$pkgname-dev $pkgname-doc qv4l2 $pkgname-dvbv5 $pkgname-libs ir_keytable"
 source="https://linuxtv.org/downloads/v4l-utils/v4l-utils-$pkgver.tar.bz2
 	types.patch
+	fix_parse_next_subopt.patch
 	"
 build() {
 	export CFLAGS="$CFLAGS -D__off_t=off_t"
@@ -84,4 +85,5 @@ ir_keytable() {
 sha512sums="
 8a634d8995d13f453dfaf90ca5d0dfb26f2f4b10a0d200d76a949c46f77040d12fc0a5b35e05d7b1ba68bcfc85a445be5a5ab1d4a7d4eabfe3a254038ccc6170  v4l-utils-1.22.1.tar.bz2
 358611fbae8348f17bf49c08820b4641deb1f7282ce2c1e20b8fdf0a85cd73ca4b46f6668c2a7328b5261e401c12f471170a9a1f3fc2982b6897ff11386c06c6  types.patch
+75834c6a1b9ee102b16baac1e0e57e33506e44e6e57a641dcdd4e83112d0150d84feeb0781a63a85255acc703ebace8c5136be93a0be1e141afeb68d043b100a  fix_parse_next_subopt.patch
 "

community/v4l-utils/fix_parse_next_subopt.patch

+parse_next_subopt() relies on undefined behavior and only works with glibc's
+implementation of getsubopt(). This fixes the issue.
+--- a/utils/v4l2-ctl/v4l2-ctl-common.cpp	2021-11-08 11:23:39.079748359 +0100
++++ b/utils/v4l2-ctl/v4l2-ctl-common.cpp	2021-11-08 11:39:49.328576794 +0100
+@@ -956,15 +956,23 @@ static bool parse_subset(char *optarg)
+ 
+ static bool parse_next_subopt(char **subs, char **value)
+ {
+-	static char *const subopts[] = {
+-	    nullptr
+-	};
+-	int opt = getsubopt(subs, subopts, value);
++	char *start = *subs;
++	if (!start || (start[0] == '\0')) {
++		fprintf(stderr, "Missing suboption value\n");
++		return true;
++	}
++	*value = start;
+ 
+-	if (opt < 0 || *value)
+-		return false;
+-	fprintf(stderr, "Missing suboption value\n");
+-	return true;
++	char *sep = std::strchr(start, ',');
++	if (sep != nullptr) {
++		*sep = '\0';
++		*subs = sep + 1;
++	}
++	else {
++		*subs = std::strchr(start, '\0');
++	}
++
++	return false;
+ }
+ 
+ void common_cmd(const std::string &media_bus_info, int ch, char *optarg)