[8.14](backport #4910) Fix issue with log_writer panic on line with all spaces #4915
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What does this PR do?
Fixes an issue where the
log_writer.go
can panic in the case it hits a line that is all spaces that becomes empty.Why is it important?
Should not panic and crash.
Checklist
[ ] I have made corresponding changes to the documentation[ ] I have made corresponding change to the default configuration files./changelog/fragments
using the changelog tool[ ] I have added an integration test or an E2E testRelated issues
This is an automatic backport of pull request #4910 done by [Mergify](https://mergify.com).