[venus-messager] 接收到退出信号时不能优雅地退出

[diwufeiwen]

Checklist

• This is not a security-related bug/issue. If it is, please follow please follow the security policy.
• This is not a question or a support request. If you have any lotus related questions, please ask in the venus forum.
• This is not a new feature request. If it is, please file a feature request instead.
• This is not an enhancement request. If it is, please file a improvement suggestion instead.
• I have searched on the issue tracker and the venus forum, and there is no existing related issue or discussion.
• I am running the latest release, or the most recent RC(release canadiate) for the upcoming release or the dev branch(master), or have an issue updating to any of these.
• I did not make any code changes to venus.

Venus component

• venus daemon - chain sync
• venus auth - authentication
• venus gateway - chain service gateway
• venus miner - mining and block production
• venus sealer/worker - sealing
• venus sealer - proving(WindowPoSt)
• venus market - storage deal
• venus market - retrieval deal
• venus market - data transfer
• venus light-weight client
• venus JSON-RPC API
• venus messager - message management (mpool)
• Other

Venus Version

commit: d69635c
branch: master

Describe the Bug

kill等系统中断信号触发后并不执行优雅退出相关的代码

Logging Information

kill等系统中断信号触发后并不执行优雅退出相关的代码

Repo Steps

1. Run '...'
2. Do '...'
3. See error '...'
   ...