Fix: use findStyle API

background/style-manager.js

@@ -118,10 +118,10 @@ const styleManager = (() => {
   }
 
   // used by install-hook-userstyles.js
-  function findStyle(filter) {
+  function findStyle(filter, noCode = false) {
     for (const style of styles.values()) {
       if (filterMatch(filter, style.data)) {
-        return style.data;
+        return noCode ? getStyleWithNoCode(style.data) : style.data;
       }
     }
     return null;

content/install-hook-userstyles.js

@@ -145,9 +145,9 @@
 
   function onUpdate() {
     return new Promise((resolve, reject) => {
-      API.getStylesInfo({
+      API.findStyle({
         md5Url: getMeta('stylish-md5-url') || location.href
-      }).then(([style]) => {
+      }, true).then(style => {
         saveStyleCode('styleUpdate', style.name, {id: style.id})
           .then(resolve, reject);
       });