Fixed classical/case_21
Fixed classical/case_21


Former-commit-id: 115da62aa896bc7a1a5ce7cda68701e4d5a56bc0 [formerly 115da62aa896bc7a1a5ce7cda68701e4d5a56bc0 [formerly a12dbe9bdbfb34822d061c362fb1de7eaaca153a]]
Former-commit-id: 821ec5430d40b36bda1ae8bdb5370761c2898274
Former-commit-id: 84705d6c4a56fce0c56100a380a7fd5490935db7
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine