OSV-2017-100 Use-of-uninitialized-value in Archive::ConvertAttributes

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4272 Crash type: Use-of-uninitialized-value Crash state: Archive::ConvertAttributes CmdExtract::ExtractCurrentFile CmdExtract::ExtractArchive...