Small fix [skip hazardlib][demos]
Small fix [skip hazardlib][demos]


Former-commit-id: dcfaf2847db3db02259d29dac014172a6a15d68c [formerly dcfaf2847db3db02259d29dac014172a6a15d68c [formerly 05429462eb4b72f4132c3a93be803294c320298a]]
Former-commit-id: 029bed496dda8cd3d0478c713e87941a90f4ffe9
Former-commit-id: d8bfb85b753d6ea9ea86623ec5353f1091d5bd62
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine