Fix pileup jet id bug (resurrect #7827 ; equiv backport of #7834)

[slava77]

(valgrind error fix)
There was an uninitialized variable in case "cutbased" was used.

same as #7834 or earlier closed #7827

[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

A new Pull Request was created by @slava77 (Slava Krutelyov) for CMSSW_7_4_X.

Fix pileup jet id bug (resurrect #7827 ; equiv backport of #7834)

It involves the following packages:

RecoJets/JetProducers

@cmsbuild, @cvuosalo, @nclopezo, @slava77 can you please review it and eventually sign? Thanks.
@rappoccio, @jdolen, @ahinzmann, @TaiSakuma, @yslai, @nhanvtran, @schoef, @mariadalfonso this is something you requested to watch as well.
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@Degano you are the release manager for this.
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[cmsbuild]

+1
Tested at: d675797
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-8392/2912/summary.html

[slava77]

+1

for #8392 d675797
no differences are observed in jenkins tests and the code change was already in 75X for some time (#7834)

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_4_X IBs unless changes (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @Degano, @ktf, @smuzaffar

[davidlange6]

+1