Fixed bug when computing the total damage distribution
Fixed bug when computing the total damage distribution


Former-commit-id: 69dcf0a2fee42079003df9839711d637c0ba7a43 [formerly 44ab140b0749698769df5f16e028720c82116884]
Former-commit-id: 67c61d624f477b472322562d60df462e17f72d6f
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine