Improved oq restore in case of empty oqdata
Improved oq restore in case of empty oqdata


Former-commit-id: 8c3fcf975adb849a927647ecb4acce7a42f891ca [formerly 2af39c01442655ca544b560924fa52112fe9024c]
Former-commit-id: c4cd65ea64e9771f7c7b6f4e1421df1b2c44341f
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine