Move src/local_free_on_destruction.hpp to include/boost/detail. Was not being found by some VC++ versions, plus header only builds are supposed to be possible without non-header directories even being present.

include/boost/system/detail/error_code.ipp

@@ -27,7 +27,7 @@
 # if defined( BOOST_WINDOWS_API )
 #   include <windows.h>
 #   if !defined(WINAPI_FAMILY) || ((WINAPI_FAMILY & WINAPI_PARTITION_DESKTOP) != 0)
-#     include "local_free_on_destruction.hpp"
+#     include <boost/system/detail/local_free_on_destruction.hpp>
 #   endif
 #   ifndef ERROR_INCORRECT_SIZE
 #     define ERROR_INCORRECT_SIZE ERROR_BAD_ARGUMENTS

include/boost/system/detail/local_free_on_destruction.hpp

@@ -0,0 +1,40 @@
+//  local_free_on_exit.hpp  ------------------------------------------------------------//
+
+//  Copyright (c) 2003-2010 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//  Copyright (c) 2010 Beman Dawes
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  This is derived from boost/asio/detail/local_free_on_block_exit.hpp to avoid
+//  a dependency on asio. Thanks to Chris Kohlhoff for pointing it out.
+
+#ifndef BOOST_SYSTEM_LOCAL_FREE_ON_EXIT_HPP
+#define BOOST_SYSTEM_LOCAL_FREE_ON_EXIT_HPP
+
+namespace boost {
+namespace system {
+namespace detail {
+
+class local_free_on_destruction
+{
+public:
+  explicit local_free_on_destruction(void* p)
+    : p_(p) {}
+
+  ~local_free_on_destruction()
+  {
+    ::LocalFree(p_);
+  }
+
+private:
+  void* p_;
+  local_free_on_destruction(const local_free_on_destruction&);  // = deleted
+  local_free_on_destruction& operator=(const local_free_on_destruction&);  // = deleted
+};
+
+} // namespace detail
+} // namespace system
+} // namespace boost
+
+#endif  // BOOST_SYSTEM_LOCAL_FREE_ON_EXIT_HPP