From f4fc0abf9f1e4a50236bd7a7de098c9052c5f980 Mon Sep 17 00:00:00 2001
From: nikki <nikki@maya>
Date: Fri, 15 Aug 2014 04:46:15 +0200
Subject: [PATCH] Check that a variable is set before trying to use it

---
 discogs_importer.user.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/discogs_importer.user.js b/discogs_importer.user.js
index 52937ee..9d22fa4 100644
--- a/discogs_importer.user.js
+++ b/discogs_importer.user.js
@@ -427,7 +427,7 @@ function parseDiscogsRelease(data) {
         }
 
         // Track number (only for Vinyl and Cassette)
-        if ( release.discs[releaseNumber-1].format.match(/(Vinyl|Cassette)/)
+        if (release.discs[releaseNumber-1].format && release.discs[releaseNumber-1].format.match(/(Vinyl|Cassette)/)
             && discogsTrack.position.match(/^[A-Z]+[\.-]?\d*/) ){
             track.number = discogsTrack.position;
         }