Fix delegates: it is now *invalid* to pull out pointer on wrong core.
Fix delegates: it is now *invalid* to pull out pointer on wrong core.

alexfrolov/grappa,buaasun/grappa,buaasun/grappa,uwsampa/grappa,alexfrolov/grappa,uwsampa/grappa,alexfrolov/grappa,buaasun/grappa,buaasun/grappa,uwsampa/grappa,alexfrolov/grappa,uwsampa/grappa,buaasun/grappa,alexfrolov/grappa,uwsampa/grappa,alexfrolov/grappa,buaasun/grappa,uwsampa/grappa,alexfrolov/grappa,buaasun/grappa,uwsampa/grappa