Minor tweaks

backend/sub-store.js

@@ -148,6 +148,15 @@ function service() {
         const allSubs = $.read(SUBS_KEY);
         const sub = allSubs[name];
         if (sub) {
+            try {
+                const output = await produceArtifact({
+                    type: 'subscription',
+                    item: sub,
+                    platform,
+                    useCache,
+                    noProcessor: raw
+                });
+
                 // forward flow headers
                 if (["QX", "Surge", "Loon"].indexOf(getPlatformFromHeaders(req.headers)) !== -1) {
                     const {headers} = await $.http.get({
@@ -162,14 +171,6 @@ function service() {
                     res.set("subscription-userinfo", userinfo);
                 }
 
-            try {
-                const output = await produceArtifact({
-                    type: 'subscription',
-                    item: sub,
-                    platform,
-                    useCache,
-                    noProcessor: raw
-                });
                 if (platform === 'JSON') {
                     res.set("Content-Type", "application/json;charset=utf-8").send(output);
                 } else {