From db256f73f56f9d6dff05a963877adc34c4c63035 Mon Sep 17 00:00:00 2001
From: tophf <tophf@gmx.com>
Date: Fri, 2 Mar 2018 15:55:39 +0300
Subject: [PATCH] send style status to USO twice if #install_button reappears

see #354
---
 content/install-hook-userstyles.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/content/install-hook-userstyles.js b/content/install-hook-userstyles.js
index 8e42db4e..d3b2ffbb 100644
--- a/content/install-hook-userstyles.js
+++ b/content/install-hook-userstyles.js
@@ -16,7 +16,7 @@
   chrome.runtime.onMessage.addListener(onMessage);
 
   let gotBody = false;
-  new MutationObserver((mutations, observer) => {
+  new MutationObserver(function _(mutations, observer) {
     if (!gotBody) {
       if (!document.body) return;
       gotBody = true;
@@ -29,11 +29,12 @@
       return;
     }
     if (document.getElementById('install_button')) {
-      observer.disconnect();
+      if (observer) observer.disconnect();
       onDOMready().then(() => {
         requestAnimationFrame(() => {
           sendEvent(sendEvent.lastEvent);
         });
+        setTimeout(_);
       });
       return;
     }