Fixed extract_uhs [skip hazardlib][demos]
Fixed extract_uhs [skip hazardlib][demos]


Former-commit-id: feaeef26b32a79a311055bbae5774cc72f17bd1d [formerly feaeef26b32a79a311055bbae5774cc72f17bd1d [formerly f0ee22b7b83e157d9d1e50968b0eaeea6e94443e]]
Former-commit-id: 28dd4d11d7c82e2aa454e939f7c276e3d1a15747
Former-commit-id: c40d9896d9a87d015bf0695c6afaf8ae2bf70168
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine