*: close ticker when function returns

[rleungx]

What problem does this PR solve?

There are some tickers that are not closed.

What is changed and how it works?

Just as the title says.

Check List

Tests

• Unit test

Release note

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• nolouch

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[codecov]

Codecov Report

Merging #4053 (bbee579) into master (c43115e) will increase coverage by 0.05%.
The diff coverage is 89.47%.

@@            Coverage Diff             @@
##           master    #4053      +/-   ##
==========================================
+ Coverage   74.53%   74.59%   +0.05%     
==========================================
  Files         258      258              
  Lines       26075    26079       +4     
==========================================
+ Hits        19436    19453      +17     
+ Misses       4901     4893       -8     
+ Partials     1738     1733       -5     

Flag	Coverage Δ
unittests	74.59% <89.47%> (+0.05%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
server/core/region_storage.go	75.58% <85.71%> (-0.29%)	⬇️
server/config/config.go	75.05% <100.00%> (+0.20%)	⬆️
server/region_syncer/server.go	83.21% <100.00%> (+0.12%)	⬆️
server/member/member.go	63.10% <0.00%> (-3.21%)	⬇️
pkg/dashboard/adapter/manager.go	79.78% <0.00%> (-3.20%)	⬇️
tools/pd-ctl/pdctl/command/operator.go	65.99% <0.00%> (-1.22%)	⬇️
server/tso/allocator_manager.go	67.27% <0.00%> (-0.51%)	⬇️
server/handler.go	42.89% <0.00%> (-0.50%)	⬇️
server/grpc_service.go	47.05% <0.00%> (-0.46%)	⬇️
server/schedule/operator_controller.go	85.54% <0.00%> (+0.79%)	⬆️
... and 5 more

---

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[nolouch]

/merge

[ti-chi-bot]

@nolouch: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: f44d31d