From bc2da3f66a6cc1d0397b3637ff5364603456eaad Mon Sep 17 00:00:00 2001
From: tophf <tophf@gmx.com>
Date: Sat, 20 Jan 2018 02:28:20 +0300
Subject: [PATCH] prevent hanging when parent frame is absent

---
 background/refresh-all-tabs.js | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/background/refresh-all-tabs.js b/background/refresh-all-tabs.js
index c649019a..12829795 100644
--- a/background/refresh-all-tabs.js
+++ b/background/refresh-all-tabs.js
@@ -141,13 +141,10 @@ global updateIcon
 
   function getFrameUrl(frame, frames) {
     while (frame.url === 'about:blank' && frame.frameId > 0) {
-      for (const f of frames) {
-        if (f.frameId === frame.parentFrameId) {
-          frame.url = f.url;
-          frame = f;
-          break;
-        }
-      }
+      const parent = frames.find(f => f.frameId === frame.parentFrameId);
+      if (!parent) break;
+      frame.url = parent.url;
+      frame = parent;
     }
     return (frame || frames[0]).url;
   }