initialize variables to fix compiler warnings

[smuzaffar]

UBSAN and LLVM 11 build show new build warnings about uninitialized variables. This PR show fix those warnings.

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-33171/21570

• This PR adds an extra 24KB to repository

[smuzaffar]

please test

[cmsbuild]

A new Pull Request was created by @smuzaffar (Malik Shahzad Muzaffar) for master.

It involves the following packages:

CondTools/Ecal
L1Trigger/TrackFindingTracklet

@ggovi, @rekovic, @cecilecaillol can you please review it and eventually sign? Thanks.
@erikbutz, @rchatter, @argiro, @Martin-Grunewald, @thomreis, @simonepigazzini, @mmusich, @skinnari this is something you requested to watch as well.
@silviodonato, @dpiparo, @qliphy you are the release manager for this.

cms-bot commands are listed here

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-3a0d3d/13486/summary.html
COMMIT: 3ccbf50
CMSSW: CMSSW_11_3_X_2021-03-13-1100/slc7_amd64_gcc900
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/33171/13486/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• No significant changes to the logs found
• Reco comparison results: 3 differences found in the comparisons
• DQMHistoTests: Total files compared: 37
• DQMHistoTests: Total histograms compared: 2635087
• DQMHistoTests: Total failures: 6
• DQMHistoTests: Total nulls: 1
• DQMHistoTests: Total successes: 2635058
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.004 KiB( 36 files compared)
• DQMHistoSizes: changed ( 312.0 ): 0.004 KiB MessageLogger/Warnings
• Checked 155 log files, 37 edm output root files, 37 DQM output files

[smuzaffar]

@cms-sw/db-l2 , @cms-sw/l1-l2 can you please review and sign this. This is only to add the default initialization values

[rekovic]

+1

[smuzaffar]

@silviodonato , @qliphy this is to fix a compilation warning in clang IBs, can you please merge this?

[qliphy]

+1

@cms-sw/db-l2 let's know if you have any concern.

[qliphy]

merge