Fixed a bug when exporting the hazard curves in the case of GMPETable
Fixed a bug when exporting the hazard curves in the case of GMPETable


Former-commit-id: fd04533d1ca4834e07fdf20b4f82b62dd1e71d42
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine