by default, AdapterIO is initialized with a BMallocIO object, which will be extended indefinitely. Flushing regularly is necessary to avoid excessive memory usage. Tested in StreamRadio. Change-Id: I9f3142c0a2300ad44dc54ccf6932d41c9526320b Reviewed-on: https://review.haiku-os.org/c/haiku/+/7302 Reviewed-by: Adrien Destugues <[email protected]> Tested-by: Commit checker robot <[email protected]>