Added a check in get_input_files
Added a check in get_input_files


Former-commit-id: 0dae1c7d0134ab40633559e2e2f49f28bf4721a9 [formerly d1cb3d706f23d93299d7233e9d59248f3c468b8f]
Former-commit-id: 8657a2db1b66bed9105e7b85bcba7e64ec6ab907
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine