[ISSUE #251]🎨Fix code style error in latest rust nightly version

[mxsm]

Which Issue(s) This PR Fixes(Closes)

Fixes #251

Brief Description

How Did You Test This Change?

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 19.35%. Comparing base (db7e954) to head (18429a1).

Files	Patch %	Lines
rocketmq-namesrv/src/route/route_info_manager.rs	0.00%	4 Missing ⚠️
rocketmq-broker/src/processor.rs	0.00%	1 Missing ⚠️
...e_operation_header/send_message_response_header.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #252      +/-   ##
==========================================
- Coverage   19.35%   19.35%   -0.01%     
==========================================
  Files         153      153              
  Lines        8071     8072       +1     
==========================================
  Hits         1562     1562              
- Misses       6509     6510       +1     

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