libsaria: Sometimes the server doesn't exist

I shouldn't try shutting down the web server if it hasn't been imported.
This will only lead to an error...

libsaria/__init__.py

@@ -8,6 +8,7 @@ import path
 import sources
 import controls
 
+server = None
 if version.__dev__ == True:
 	import server
 
@@ -26,7 +27,8 @@ def startup():
 
 def shutdown():
 	audio.shutdown()
-	server.shutdown()
+	if server != None:
+		server.shutdown()
 ##	import plugin
 ##	plugin.quit()