### What changes were proposed in this pull request? Avoid NPE when transition worker state ### Why are the changes needed? Fix test. ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? No need. Closes #2938 from reswqa/fix-npe. Authored-by: Weijie Guo <reswqa@163.com> Signed-off-by: SteNicholas <programgeek@163.com> |
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