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There is potentially a race with a slow starting internal queue causing a NPE if Has is checked before the internal queue has been setup. This PR adds a lock on the Has() fn. Fix #14311 Signed-off-by: Andrew Thornton <art27@cantab.net>
There is potentially a race with a slow starting internal queue causing a NPE if Has is checked before the internal queue has been setup. This PR adds a lock on the Has() fn. Fix #14311 Signed-off-by: Andrew Thornton <art27@cantab.net>