Revert "use std::unordered_set instead of boost::unordered_set for all instances in moses2. To avoid confusion"

This reverts commit 65c75ff0739ee2f88fc423ec1ad074e1b9b4a9b8.

1 files changed, 2 insertions, 1 deletions

diff --git a/moses2/defer/CubePruningCardinalStack/Misc.h b/moses2/defer/CubePruningCardinalStack/Misc.h
index d04c299d1..9f5d28f1e 100644
--- a/moses2/defer/CubePruningCardinalStack/Misc.h
+++ b/moses2/defer/CubePruningCardinalStack/Misc.h
@@ -7,6 +7,7 @@
 #pragma once
 #include <boost/pool/pool_alloc.hpp>
 #include <boost/unordered_map.hpp>
+#include <boost/unordered_set.hpp>
 #include <vector>
 #include <queue>
 #include "../../legacy/Range.h"
@@ -71,7 +72,7 @@ public:
           QueueItemOrderer> Queue;
 
   typedef std::pair<const CubeEdge*, int> SeenPositionItem;
-  typedef std::unordered_set<SeenPositionItem,
+  typedef boost::unordered_set<SeenPositionItem,
           boost::hash<SeenPositionItem>,
           std::equal_to<SeenPositionItem>
           > SeenPositions;