fixed on_exit duplicate

include/boost/process/async.hpp

@@ -87,30 +87,6 @@ struct initializer_builder<async_tag>
 
 using ::boost::asio::buffer;
 
-
-/** When an io_service is passed, the on_exit property can be used, to be notified
-    when the child process exits.
-
-
-The following syntax is valid
-
-\code{.cpp}
-on_exit=function;
-on_exit(function);
-\endcode
-
-with `function` being callable with `(int, const std::error_code&)`.
-
-\par Example
-
-\code{.cpp}
-io_service ios;
-spawn("ls", on_exit=[](int exit, const std::error_code& ec_in){});
-\endcode
-
- */
-constexpr static ::boost::process::detail::on_exit_ on_exit{};
-
 }}
 
 

include/boost/process/detail/on_exit.hpp

@@ -23,12 +23,31 @@ struct on_exit_
     api::on_exit_ operator()(const std::function<void(int, const std::error_code&)> & f) const {return f;}
 };
 
-
-constexpr static on_exit_ on_exit;
-
 }
 
-using ::boost::process::detail::on_exit;
+/** When an io_service is passed, the on_exit property can be used, to be notified
+    when the child process exits.
+
+
+The following syntax is valid
+
+\code{.cpp}
+on_exit=function;
+on_exit(function);
+\endcode
+
+with `function` being callable with `(int, const std::error_code&)`.
+
+\par Example
+
+\code{.cpp}
+io_service ios;
+spawn("ls", on_exit=[](int exit, const std::error_code& ec_in){});
+\endcode
+
+ */
+constexpr static ::boost::process::detail::on_exit_ on_exit{};
+
 
 }}
 #endif /* INCLUDE_BOOST_PROCESS_WINDOWS_ON_EXIT_HPP_ */