https-dns-proxy: upstream bugfix for ca_info

* upstream bugfix: Add a forgotten 'NULL' initialize for ca_info
  if not manually set
* make init script PKG_VERSION variable readonly so that a
  shellcheck excettion can be removed
* add procd interface trigger to 'wan6' if IPv6 wan interface name
  cannot be obtained on start

Signed-off-by: Stan Grishin <stangri@melmac.ca>
(cherry picked from commit bca5d0ed8e)

net/https-dns-proxy/files/https-dns-proxy.init

@@ -1,7 +1,6 @@
 #!/bin/sh /etc/rc.common
 # Copyright 2019-2022 Stan Grishin (stangri@melmac.ca)
-# shellcheck disable=SC1091,SC2039,SC3043,SC3060
-PKG_VERSION='dev-test'
+# shellcheck disable=SC1091,SC3043,SC3060
 
 # shellcheck disable=SC2034
 START=80
@@ -15,6 +14,7 @@ else
 	EXTRA_COMMANDS='version'
 fi
 
+readonly PKG_VERSION='dev-test'
 readonly packageName='https-dns-proxy'
 readonly serviceName="$packageName $PKG_VERSION"
 readonly sharedMemoryOutput="/dev/shm/$packageName-output"
@@ -254,6 +254,7 @@ service_triggers() {
 	network_find_wan wan
 	network_find_wan6 wan6
 	wan="${wan:-wan}"
+	wan6="${wan6:-wan6}"
 	for i in "$wan" "$wan6"; do
 		procd_add_interface_trigger "interface.*" "$i" "/etc/init.d/${packageName}" restart
 	done