From c1eb0438abc99d0502999c850e8d318a94fb54ee Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 18 Jul 2017 08:52:24 +0530
Subject: [PATCH] Server: Fix an error on browsers that do not support blob
 storage in IndexedDB. Fixes #1704912 [TypeError:undefined is not an
 object](https://bugs.launchpad.net/calibre/+bug/1704912)

---
 src/pyj/read_book/db.pyj | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/pyj/read_book/db.pyj b/src/pyj/read_book/db.pyj
index a5d8200de0..631f2274b8 100644
--- a/src/pyj/read_book/db.pyj
+++ b/src/pyj/read_book/db.pyj
@@ -98,6 +98,7 @@ class DB:
                 req = store.put(blob, ':-test-blob-:')
             except:
                 self.initialize_stage2(idb, False)
+                return
             req.onsuccess = def(event):
                 self.initialize_stage2(idb, True)
             req.onerror = def(event):