over-engineered thread-safe static OUString
over-engineered thread-safe static OUString

This is a ridiculous over-engineered thread-safe static string for
something which is called so few times, and costs 1k of long-term
memory as the OUString dtor needs to be put into a callback
queue to get called at module unload time.

Just return a new string every time, *rolls eyes*

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