From 600df6d2ec84df5238781f1274b6f5ff31a34646 Mon Sep 17 00:00:00 2001
From: Nicolas Werner <nicolas.werner@hotmail.de>
Date: Fri, 2 Oct 2020 16:39:20 +0200
Subject: [PATCH] Fix fetching inexistent batch tokens

---
 src/Cache.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/Cache.cpp b/src/Cache.cpp
index 8b47c35..b7a2534 100644
--- a/src/Cache.cpp
+++ b/src/Cache.cpp
@@ -687,11 +687,14 @@ Cache::nextBatchToken() const
         auto txn = lmdb::txn::begin(env_, nullptr, MDB_RDONLY);
         lmdb::val token;
 
-        lmdb::dbi_get(txn, syncStateDb_, NEXT_BATCH_KEY, token);
+        auto result = lmdb::dbi_get(txn, syncStateDb_, NEXT_BATCH_KEY, token);
 
         txn.commit();
 
-        return std::string(token.data(), token.size());
+        if (result)
+                return std::string(token.data(), token.size());
+        else
+                return "";
 }
 
 void