shunt: fix rpcd status call

* define tproxy_available() before render(): ucode resolves the name
  when render() is compiled, so the later definition left it null and
  every status call failed - LuCI showed "no answer from the backend"

Signed-off-by: Dirk Brenken <dev@brenken.org>

net/shunt/Makefile

@@ -6,7 +6,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=shunt
 PKG_VERSION:=0.1.11
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 PKG_LICENSE:=GPL-3.0-or-later
 PKG_LICENSE_FILES:=
 PKG_MAINTAINER:=Dirk Brenken <dev@brenken.org>

net/shunt/files/shunt.rpcd

@@ -38,6 +38,14 @@ function daemon_status() {
 	return r ?? null;
 }
 
+// Same test as the daemon's, so LuCI reports the policy the daemon skips.
+function tproxy_available() {
+	let rel = trim(readfile('/proc/sys/kernel/osrelease') ?? '');
+
+	return !!(access('/sys/module/nft_tproxy') ||
+		(length(rel) && access(`/lib/modules/${rel}/nft_tproxy.ko`)));
+}
+
 // The same sequence as the daemon's build_state(), minus the logging: two
 // readings of one config file are how a status view starts to lie.
 function render() {
@@ -70,14 +78,6 @@ function render() {
 	return { cfg, files: f, matcher: m, nft: n, route: r };
 }
 
-// Same test as the daemon's, so LuCI reports the policy the daemon skips.
-function tproxy_available() {
-	let rel = trim(readfile('/proc/sys/kernel/osrelease') ?? '');
-
-	return !!(access('/sys/module/nft_tproxy') ||
-		(length(rel) && access(`/lib/modules/${rel}/nft_tproxy.ko`)));
-}
-
 // Policy devices whose marked traffic the kernel would drop: max(all, <dev>),
 // blocked only when all is strict (1) and the device is not loose itself. Same
 // logic as the daemon. When rp_filter_manage is on the daemon has already set