ADM-919:[backend] fix: set code committer is null when author is null

[yulongcai]

Summary

set code committer is null when author is null

Before

After

Note

Null

[github-actions]

Hi @yulongcai! 👋
Thank you for submitting a pull request! We appreciate your contribution and will review your changes as soon as possible.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.00%	✅ 100.00%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (d8c3fea)	6748	6748	100.00%
Head commit (e6e9924)	13490 (+6742)	13490 (+6742)	100.00% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#1382)	2	2	100.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[sonarcloud]

Quality Gate passed for 'heartbeat-backend'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[sonarcloud]

Quality Gate passed for 'au-heartbeat-heartbeat-frontend'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud