DynamicAmbientSound.soundPlaying without effect?

[Barbie]

For another reason I had a look at the code for DynamicAmbientSound - the variable soundPlaying is only defined there but not used anywhere in the code and by this without effect?
(see code)

[sektor2111]

Usually if something like that is disturbing my state, I'm writing another actor - for fixing a map or for patching original one. If it's something common like "Counter" definitely a common mutator/actor might solve problem...