From 6a8ea9e65b63999c7200cb0924fbad1b4d1324f8 Mon Sep 17 00:00:00 2001
From: Damien Elmes <gpg@ankiweb.net>
Date: Tue, 24 Dec 2019 19:12:59 +1000
Subject: [PATCH] if db lock fails, explicitly close database

on Windows at least, the database file otherwise remains locked after
an exception is raised on a read only file
---
 anki/storage.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/anki/storage.py b/anki/storage.py
index b75a54827..842bb6e2d 100644
--- a/anki/storage.py
+++ b/anki/storage.py
@@ -63,7 +63,11 @@ def Collection(
         addBasicModel(col)
         col.save()
     if lock:
-        col.lock()
+        try:
+            col.lock()
+        except:
+            col.db.close()
+            raise
     return col