Remove unnecessary invoke hook since the default one provides the correct

behaviour, and including it here for the invoke_current_handler class breaks
MSVC 7.1 when generating browse information.


[SVN r36055]

include/boost/asio/detail/strand_service.hpp

@@ -242,12 +242,9 @@ public:
       return impl_->handler_storage_.address();
     }
 
-    template <typename Function>
-    friend void asio_handler_invoke(Function function,
-        invoke_current_handler*)
-    {
-      function();
-    }
+    // The asio_handler_invoke hook is not defined here since the default one
+    // provides the correct behaviour, and including it here breaks MSVC 7.1
+    // in some situations.
 
   private:
     strand_service& service_impl_;