Details
Description
I am using the HeaderContributor.forJavaScript method. and the HeaderContributor.cleanup() is never called. so processedEntries will be stay alive in thead and if the thread will be reused for another request the renderHead method will not process the contributors which are known in the thead form previouse request. after i add a new HeaderContributor().cleanup(); in WebRequestCycle.onEndRequest() every thing works fine.