From f5eabd49cdde4ea912bd7ecb59dc78882f65dcc8 Mon Sep 17 00:00:00 2001
From: Max Neunhoeffer <max@arangodb.com>
Date: Mon, 15 Sep 2014 13:36:56 +0200
Subject: [PATCH] Less copying by returning a ref.

---
 arangod/Aql/ExecutionBlock.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arangod/Aql/ExecutionBlock.cpp b/arangod/Aql/ExecutionBlock.cpp
index 144656255c..d49e51ed7c 100644
--- a/arangod/Aql/ExecutionBlock.cpp
+++ b/arangod/Aql/ExecutionBlock.cpp
@@ -966,7 +966,7 @@ bool IndexRangeBlock::readIndex () {
     // the current incoming item:
     AqlItemBlock* cur = _buffer.front();
     vector<AqlValue>& data(cur->getData());
-    vector<TRI_document_collection_t const*> docColls(cur->getDocumentCollections());
+    vector<TRI_document_collection_t const*>& docColls(cur->getDocumentCollections());
     RegisterId nrRegs = cur->getNrRegs();
 
     auto newCondition = new IndexOrCondition();