Fixed a small bug with the minimum_magnitude [demos]
Fixed a small bug with the minimum_magnitude [demos]


Former-commit-id: ec65e7e04bf8be2c6747752cfd262bc3df3f0c20 [formerly e6f9127e9084e4369e9a232ddd7bc4f4903b8e82]
Former-commit-id: 2087c3be649ab11c71b31644f4b659d20369261c
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine