tweak shutdown procedure for example plugin to match our new methodology

indra/media_plugins/example/media_plugin_example.cpp

@@ -123,10 +123,10 @@ void mediaPluginExample::receiveMessage(const char* message_string)
 			}
 			else if (message_name == "cleanup")
 			{
-				LLPluginMessage message("base", "goodbye");
-				sendMessage(message);
-
-				mDeleteMe = true;
+				LLPluginMessage message("base", "goodbye");
+				sendMessage(message);
+
+				mDeleteMe = true;
 			}
 			else if (message_name == "shm_added")
 			{
@@ -389,3 +389,4 @@ int init_media_plugin(LLPluginInstance::sendMessageFunction host_send_func,
 
 	return 0;
 }
+