Small fix to expo2csv [skip CI]
Small fix to expo2csv [skip CI]


Former-commit-id: c306058507fdd2911b1ceffb0c49ccd693f65138 [formerly c306058507fdd2911b1ceffb0c49ccd693f65138 [formerly ef3ff146b50f8974ed09ee33e015c8f8fdb8dfca]]
Former-commit-id: f4880927038d53617879827adcae5ed40e3b0b0d
Former-commit-id: b5f928f8dd0ac1132f4d41b0bf5766d376a4ab17
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine