[metrics-bugs] #30544 [Metrics/Library]: Using try-with-resources or close resource

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#30544: Using try-with-resources or close resource
-----------------------------+------------------------------
 Reporter:  fava             |          Owner:  metrics-team
     Type:  defect           |         Status:  new
 Priority:  Medium           |      Milestone:
Component:  Metrics/Library  |        Version:
 Severity:  Major            |     Resolution:
 Keywords:                   |  Actual Points:
Parent ID:                   |         Points:
 Reviewer:                   |        Sponsor:
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Comment (by fava):

 Replying to [comment:9 karsten]:
 > Looks good! Merged to master. Thanks!
 >

 Last compressed archive with all remaining try-with-resource
 [attachment:30544-resource-leak-v4.tar.gz​].

 I also execute travis + sonarcloud on a branch master + try-with-
 resources-patches and there are no more issues for try-with-resources .
 Please find at [https://sonarcloud.io/project/issues?id=org.torproject
 %3Ametrics-lib&resolved=false latest analysis]

 Best Regards

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30544#comment:10>
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