Merge pull request #8562 from neikeq/ame-ame-ame

AudioServer: Set singleton to NULL when destructed

servers/audio_server.cpp

@@ -1012,6 +1012,7 @@ AudioServer::AudioServer() {
 AudioServer::~AudioServer() {
 
 	memdelete(audio_data_lock);
+	singleton = NULL;
 }
 
 /////////////////////////////////