From 8081d42477c1422366d88cc8c1e4ff4bcba58cca Mon Sep 17 00:00:00 2001
From: Feross Aboukhadijeh <feross@feross.org>
Date: Wed, 5 Oct 2016 02:14:22 -0700
Subject: [PATCH] Attempt to fix "TypeError: Cannot read property 'startPiece'
 of undefined"

It wasn't clear what was causing this error, and I couldn't reproduce
it.

This PR attempts to resolve the issue by just guarding against the
exception.
---
 src/renderer/pages/player-page.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/renderer/pages/player-page.js b/src/renderer/pages/player-page.js
index 6db4d6bf..1574ee17 100644
--- a/src/renderer/pages/player-page.js
+++ b/src/renderer/pages/player-page.js
@@ -599,12 +599,15 @@ function renderLoadingBar (state) {
 
   const torrentSummary = state.getPlayingTorrentSummary()
   if (!torrentSummary.progress) {
-    return []
+    return null
   }
 
   // Find all contiguous parts of the torrent which are loaded
   const prog = torrentSummary.progress
   const fileProg = prog.files[state.playing.fileIndex]
+
+  if (!fileProg) return null
+
   const parts = []
   let lastPiecePresent = false
   for (let i = fileProg.startPiece; i <= fileProg.endPiece; i++) {
@@ -626,6 +629,7 @@ function renderLoadingBar (state) {
 
     return (<div key={i} className='loading-bar-part' style={style} />)
   })
+
   return (<div key='loading-bar' className='loading-bar'>{loadingBarElems}</div>)
 }