1 files changed, 12 insertions, 6 deletions
diff --git a/3rdParty/Boost/src/boost/asio/buffers_iterator.hpp b/3rdParty/Boost/src/boost/asio/buffers_iterator.hpp
index 0b654b8..1ffd02d 100644
--- a/3rdParty/Boost/src/boost/asio/buffers_iterator.hpp
+++ b/3rdParty/Boost/src/boost/asio/buffers_iterator.hpp
@@ -15,20 +15,17 @@
 # pragma once
 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
 
-#include <boost/asio/detail/push_options.hpp>
-
-#include <boost/asio/detail/push_options.hpp>
+#include <boost/asio/detail/config.hpp>
 #include <cstddef>
 #include <boost/assert.hpp>
-#include <boost/config.hpp>
 #include <boost/detail/workaround.hpp>
 #include <boost/iterator.hpp>
 #include <boost/type_traits/is_convertible.hpp>
 #include <boost/type_traits/add_const.hpp>
-#include <boost/asio/detail/pop_options.hpp>
-
 #include <boost/asio/buffer.hpp>
 
+#include <boost/asio/detail/push_options.hpp>
+
 namespace boost {
 namespace asio {
 
@@ -211,6 +208,15 @@ public:
     return tmp;
   }
 
+  /// Addition operator.
+  friend buffers_iterator operator+(std::ptrdiff_t difference,
+      const buffers_iterator& iter)
+  {
+    buffers_iterator tmp(iter);
+    tmp.advance(difference);
+    return tmp;
+  }
+
   /// Subtraction operator.
   friend buffers_iterator operator-(const buffers_iterator& iter,
       std::ptrdiff_t difference)