updated check noDamageLimit can be zero
updated check noDamageLimit can be zero


Former-commit-id: 5183a8bbce141737b6dc5e982bc84844d3be5c04 [formerly 11cb9f9c5d227a9401b2719237038db54afac7ff]
Former-commit-id: 510f8e41e7818e36a4c5f4e9c3adcce8b7a62e2d
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine