Reorder function definitions.

asio/include/asio/detail/impl/select_reactor.ipp

diff --git a/asio/include/asio/detail/impl/select_reactor.ipp b/asio/include/asio/detail/impl/select_reactor.ipp
index 2567780..e06770c 100644
--- a/asio/include/asio/detail/impl/select_reactor.ipp
+++ b/asio/include/asio/detail/impl/select_reactor.ipp
@@ -112,6 +112,12 @@
   return 0;
 }
 
+void select_reactor::move_descriptor(socket_type,
+    select_reactor::per_descriptor_data&,
+    select_reactor::per_descriptor_data&)
+{
+}
+
 void select_reactor::start_op(int op_type, socket_type descriptor,
     select_reactor::per_descriptor_data&, reactor_op* op, bool)
 {
@@ -152,12 +158,6 @@
     op_queue_[i].cancel_operations(descriptor, ops);
 }
 
-void select_reactor::move_descriptor(socket_type,
-    select_reactor::per_descriptor_data&,
-    select_reactor::per_descriptor_data&)
-{
-}
-
 void select_reactor::run(bool block, op_queue<operation>& ops)
 {
   asio::detail::mutex::scoped_lock lock(mutex_);