[LyX/master] Fix compilation with MSVC

[Guillaume Munch]

commit a7b993143e2bd30a4ea0f69c4cd9dc9e98f3f21d
Author: Guillaume Munch <g...@lyx.org>
Date:   Thu Dec 8 16:27:45 2016 +0100

    Fix compilation with MSVC
---
 src/Encoding.cpp |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/src/Encoding.cpp b/src/Encoding.cpp
index e0b3b70..9dde12d 100644
--- a/src/Encoding.cpp
+++ b/src/Encoding.cpp
@@ -25,8 +25,9 @@
 
 #include <boost/cstdint.hpp>
 
-#include <sstream>
+#include <iterator>
 #include <algorithm>
+#include <sstream>
 
 using namespace std;
 using namespace lyx::support;