From 56ccf781eba1b79c5b3fe1f5bd92aab89df92f6f Mon Sep 17 00:00:00 2001
From: Sebastian Messmer <mail@smessmer.de>
Date: Sat, 13 Feb 2016 15:26:16 +0100
Subject: [PATCH] Fix compiler warning on GCC 4.8

---
 src/blockstore/implementations/ondisk/OnDiskBlock.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/blockstore/implementations/ondisk/OnDiskBlock.cpp b/src/blockstore/implementations/ondisk/OnDiskBlock.cpp
index cb78e4b3..36dbd390 100644
--- a/src/blockstore/implementations/ondisk/OnDiskBlock.cpp
+++ b/src/blockstore/implementations/ondisk/OnDiskBlock.cpp
@@ -112,7 +112,8 @@ optional<Data> OnDiskBlock::_loadFromDisk(const bf::path &filepath) {
   }
   _checkHeader(&file);
   Data result = Data::LoadFromStream(file);
-  return result;
+  //TODO With newer compilers, "return result;" would be enough
+  return boost::optional<Data>(std::move(result));
 }
 
 void OnDiskBlock::_checkHeader(istream *str) {