Fixed another warning [skip CI]
Fixed another warning [skip CI]


Former-commit-id: 0647fcd49e695836afb0b50a4d557914e3c3970a [formerly be9b4970c2b28749dd87f65e9f5609a6206f4f94] [formerly be9b4970c2b28749dd87f65e9f5609a6206f4f94 [formerly 430c2114a5e9b21cfd62b7e307e78d3c652d2f2b]]
Former-commit-id: 57f04f438a1207817ccda10111e2bf19907b967e
Former-commit-id: 4f099b9c042d81b1ac8914e3baa45065ab229414
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine