From c04cbc8d323ae79fdcccaf4f0c74bf6409ae9fe8 Mon Sep 17 00:00:00 2001
From: Philipp Wolfer <ph.wolfer@gmail.com>
Date: Fri, 20 Nov 2020 21:27:37 +0100
Subject: [PATCH] PICARD-2017: Fix crash when removing NATs

When the non-album track "album" entry got removed just before a non-album track was also removed Picard would crash.
---
 picard/tagger.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/picard/tagger.py b/picard/tagger.py
index 3ec8dd7ae..3366dafb0 100644
--- a/picard/tagger.py
+++ b/picard/tagger.py
@@ -718,6 +718,8 @@ class Tagger(QtWidgets.QApplication):
         """Remove the specified non-album track."""
         log.debug("Removing %r", track)
         self.remove_files(self.get_files_from_objects([track]))
+        if not self.nats:
+            return
         self.nats.tracks.remove(track)
         if not self.nats.tracks:
             self.remove_album(self.nats)