skip nonexistent branch checks in L1TGlobalUtilHelper

[slava77]

this is expected to resolve #26182
thanks @Dr15Jones for suggesting a solution.

some notes leading to the resolution are in #26182 (comment) and following

[cmsbuild]

The code-checks are being triggered in jenkins.

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-26328/9035

• This PR adds an extra 16KB to repository

[cmsbuild]

A new Pull Request was created by @slava77 (Slava Krutelyov) for master.

It involves the following packages:

L1Trigger/L1TGlobal

@cmsbuild, @rekovic can you please review it and eventually sign? Thanks.
@Martin-Grunewald this is something you requested to watch as well.
@davidlange6, @slava77, @fabiocos you are the release manager for this.

cms-bot commands are listed here

[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/33910/console Started: 2019/04/02 17:16

[cmsbuild]

+1
Tested at: a2df2bb
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-26328/33910/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-26328/33910/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 32
• DQMHistoTests: Total histograms compared: 3139747
• DQMHistoTests: Total failures: 1
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3139549
• DQMHistoTests: Total skipped: 197
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 31 files compared)
• Checked 133 log files, 14 edm output root files, 32 DQM output files

[fabiocos]

@rekovic could you please check? This should fix an annoying problem (@slava77 thanks)

[fabiocos]

@rekovic ping

[fabiocos]

+1

[rekovic]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs (tests are also fine). This pull request will be automatically merged.